Category Archives: Rifles

Scoop: New Hornady A-Tip MATCH Bullets! Part 1

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Witness the creation of the ultimate low-drag, high performance match bullet!

Hornady A-Tip Bullets Now At Midsouth Shooters!

After weeks of teasers, we’re finally able to talk about the new projectile from the folks at Hornady. We actually got to visit Grand Island, Nebraska to tour the facility, and get a first-hand look at the new milled aluminum tipped bullets. This thing is beautiful!

“New to Midsouth Shooters and Hornady, the A-Tip MATCH bullets are the latest and greatest from the Hornady Ballistic Development Group! After years of research, testing, and a new advanced manufacturing process with state-of-the-art quality control measures, Hornady has created an all new Aluminum Tipped projectile. This precision machined tip is longer than polymer tips which moves the center of gravity, thus enhancing inflight stability. The aeroballistically advanced tip design results in tighter groups, and reduced drag variability.”

By using some of the most sophisticated tools in projectile development, Hornady created a bullet with a milled tip, 99% repeatable, and a Doppler Radar verified low-drag coefficient (super-high Ballistic Coefficient) with a winning blend of ogive, tip length, bearing surface, and optimized boat-tail within each caliber.

“We wanted to incorporate aluminum tips in a full line of match bullets for years because we can make longer tips than we can with polymer materials,” said Joe Thielen, Assistant Director of Engineering. “This longer tip is a key component that helps move the center of gravity of the bullet rearward, thus enhancing in-flight stability and reducing dispersion. The problem has always been the cost to produce a tip like this, but we’ve developed a cost-effective process for manufacturing these aluminum tips while staying affordable for serious match shooters. The longer aluminum tips are machined to be caliber-specific, and when coupled with highly refined AMP® bullet jackets, aggressive profiles and optimized boattails, the result is enhanced drag efficiency (high BC) across the board. Each bullet design is carefully crafted for minimal drag variability for the utmost in shot-to-shot consistent downrange accuracy.The materials, design and manufacturing techniques combine for the most consistent and accurate match bullets available.”

– Hornady

Right off the press, the projectiles are sequentially packed, for ultimate consistent performance, from lot to lot, ensuring your projectiles are truly YOURS every step of the way. Think of it like shooting clones of your load every time (100 in each box)! Minimal handling throughout the process means there’s less of a chance of YOUR bullet being marred, scuffed, or altered, which is why each box is packaged with a Polishing Bag for you to give the final buff to your beautiful new projectiles!

Hornady A-Tip MATCH Bullets:

6MM 110gr Hornady A-Tip6.5MM 135gr Hornady A-Tip 6.5MM 153gr Hornady A-Tip  30CAL 230gr Hornady A-Tip 30CAL 250gr Hornady A-Tip

Part 2 is forthcoming, with more in-depth analysis from Hornady’s lead technicians. Get ready for graphs, charts, and more! To read the press release, CLICK HERE!

RELOADERS CORNER: Case Trimming

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We all have to trim bottleneck cases sometime. Question is when and how much, and then “how,” and here’s a place to start. KEEP READING

case trimmer

Glen Zediker

After going through that last series on keeping up with changes in cases resulting from their use and reuse, “flow” was a culprit behind the majority of detrimental changes. That is: Brass flows during firing. It moves from where it was to somewhere else. Since there’s a finite amount of material in a case, one place is getting thinner and another is getting thicker. The sources of the material, where the flow starts and where it stops, are primarily case necks and case heads.

To completely finish up on all this, the most obvious indication that there’s flow is measuring case lengths from base to mouth.

case trimming
The primary reason to trim is to keep overly-long cases from overrunning their space in the chamber. If the case mouth encounters the end of its allotted space, it can pinch in on the bullet, elevating pressure. Now, there’s usually a good deal of leeway before safety can be a question, but don’t push it…
measure case length
A caliper is the only tool needed to measure case length. It’s not really necessary to measure each and every case each and every time. It’s a whopping lot faster to set the trimmer so it just touches the shortest case you have (revealed through the process itself in setting up the trimmer) and trim all the cases using that setting locked in place.

First, and very (very) important: The ONLY time to check case length, or to trim cases, is after they have been sized! A fired, unsized case will be shorter than it was going in. The reason is because of the expansion in the case that resulted from firing. When the expanded areas are squeezed back to spec by a sizing die the case gets longer as it gets smaller in diameter, same as rolling a ball of modeling clay out on a table. After sizing is also the only time we can we know that the case shoulder area is consistent in dimension.

You’ll see two length figures published for your cartridge of choice: maximum length and trim-to length. Published trim-to length is usually 0.010-inches under what’s listed as maximum.

I got a gage umpteen years ago that could indicate the maximum case length a chamber could accommodate — technically, a “chamber length gage.” Man. I checked the chambers in my main rifles and found that they were all well more generous than the SAAMI-maximum. That didn’t really mean a lot, in fact, to how I proceeded. And it also didn’t mean I can advise ignoring the potential for danger in exceeding SAAMI-maximum. It just pointed out that there are differences in chambers, gun to gun, and at least showed me that not exceeding max stated length should easily keep you safe.

chamber length gage

If a case got too long, exceeded the amount of room given to it in the chamber, that would be a safety problem! The bolt may not close fully. And, if it did, the extra length would create a pinching-in constriction, and that would spike pressure.

We can easily imagine that there’s an influence from relatively longer or shorter case necks in their influence in consistently encasing the bullet. And I’m sure we’d be right. Trimming cases all the same should mean that all the case neck cylinders are the same height. Someone looking to maximize accuracy is liable to get worked up about that enough to trim each firing. I trimmed my tournament cases each use. And, no, none were remotely approaching maximum length. It’s reasonable to further suppose that more or less retention will influence velocity consistency.

Another performance asset may or may not happen, depending on the trimming tool chosen. But. A good trimmer will square the case mouth. I’ve seen a many new cases with a “half-moon” cut after trimming. A square case mouth helps a bullet start and finish straight when it’s seated.

case trimmer
Not all case trimmers are equal. We’ll talk more about some I like next time, and I’ll tell you why.

My routine for this sort of “accuracy-oriented” case trimming is simple — tedious, but simple. I don’t measure each case. I just run them all through a trimmer set to “some” length. Some are trimmed more or less, some just show a bright scuff on one little bit of the case mouth, but they are then all the same length. If I can’t prove it in group sizes, it sho does set my mind at ease that all the cases are holding all the bullets more nearly the same.

For those rifles that aren’t tournament guns, the only concern is that none, indeed, become too long. Those I will check at that “4-firings-in” point. Some may have reached SAAMI-maximum, most won’t have, but all will be longer than when started. I start them at a figure close to suggested “trim-to.” Stop and think about it, and if there’s been overall a 0.010-inch length increase, that’s significant.

As with all things associated with use and reuse in semi-autos compared to bolt-actions, cases are going to grow more and faster in a gas-gun.

Another instance where it’s important to keep up with case lengths, and that, again, really has to do with making them all the same, is for those who crimp (with a conventional cannelure method).

Now, there’s zero harm in using a longer “trim-to” length, and that may be more popular than my method. These lengths are stated in reloading manuals. Keeping up with it over years, I’ve seen no difference in the rate of lengthening trimming longer or shorter; I trim “shorter” solely as a matter of consistency over the (short) life of my semi-auto cases.

Next time more about the tools.

Get started shopping HERE

The preceding is a specially-adapted excerpt from Glen Zediker’s book Top-Grade Ammo.

Glen’s books, Handloading For Competition and Top-Grade Ammo, are available at Midsouth HERE. For more information about other books by Glen, visit ZedikerPublishing.com

Glen’s newest book, America’s Gun: The Practical AR15. Check it out HERE

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RELOADERS CORNER: Four Firings In: Final

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Yikes. Gremlins. Case neck “donuts” are a common development in an aging cartridge case, and it’s often unknown. Read this and know! MORE

case neck donut
Here one is! Or was.

Glen Zediker

Even if the case neck passes the “drop test,” there might be something amiss within that cylinder, and it might not show up until after case sizing, and that is the “dreaded donut.”

What exactly is a case neck donut? It’s a tiny elevated ring of brass on the interior circumference of the case neck, right at the juncture of the case neck, case shoulder. It is pretty much a little o-ring, in effect.

This “tight spot” reduces the case neck inside diameter at that point, which will, not may, have an influence on the amount of constriction surrounding a seated bullet. And since it won’t be perfectly consistent from case to case, accuracy will, not may, suffer.

And, without a doubt, there’s going to be cartridge pressure changes, which can create velocity changes. A donut is not likely to create anything like a pressure spike similar to what an excessively thickened (overall) case neck can, but it can’t be a Good Thing no matter what.

Now. I can’t say this is always a symptom of aging cases (based on the “four firings in” idea I’ve been running with). I’ve seen donuts in new cases. However, in my experience with the brass I normally use, and, therefore, that which I have the most notes on, the formation of a donut seems to coincide at the same time I measure what I think is excessive case neck wall thickening. Again, though, I spent an afternoon at the loading bench with David Tubb trying to solve donut issues he was having after one firing on commonly known “good” brass. We solved them, and more in a bit.

Culprits
There is a difference in the case wall tubing thickness at the case neck, case shoulder juncture. The neck walls are a consistent thickness — it’s a parallel cylinder (or they start off that way). At the shoulder wall thickness increases steadily in a taper as it goes down the case shoulder to then intersect with the case body walls.

There is diverse speculation about exactly what causes or creates the donut. My own experience suggests that there can be more than one factor or influence. But at the root of it is simply this difference in wall thicknesses. The difference has an influence in this area with respect to brass flow. Seems certain that there’s material movement forward from the case shoulder.

If that’s it, then the chamber dimensions (neck diameter and headspace) and cartridge case headspace play their parts. Same old: with respect to case headspace, it’s another reason to set back a shoulder the minimum amount needed for faultless function. Also old news: that’s going to be more for a repeater than a single-shot, and well more for a semi-auto.

I’ve seen it said that the expander ball or sizing button coming back up through a sized case neck “drags” the metal up with it, but also I know without a doubt that sizing without an expander means there’s a more pronounced donut. Checks I’m made sizing with and without an expander (using a neck-bushing-style die), show that an expander or, my preference, an expanding mandrel, reduces the donut influence. That, by the way, is from selecting bushings that produce the same case neck outside diameter with and without the inside neck sizing. I think the expander is just pushing it to the outside… But that’s good!

case neck donut neck turning
This helps! Turning a tiny bit off the start of the shoulder gives some relief in this area and holds off the donut for at least a while.
neck turning cutter angle
The neck turner, however, has to be configured to allow for this. Note the bevel on this cutter.

Fixing It
This one is pretty easy, after a little math at least. The most direct means is using a correctly sized reamer on a likewise correctly sized case neck, and that’s where the math comes in. The reamer should be the diameter of your sized neck inside diameter; that will pare away the donut without changing the case neck wall thickness. The idea is to get the donut without universally thinning the case neck walls, and the reason there is maintaining consistency. That, after all, is why we’re doing any sort of fixing on cases in the first place: get the same performance the maximum number of firings.

Another way, which is primarily preventative, is with an outside case neck turner, if its cutter has an angle or bevel (see photo for example). Turn down onto the case shoulder about 1/16 of an inch. Do this on new cases since that’s the only good time to turn case necks. This area is then “relieved” enough that the donut won’t form, or not for a while. In firing, this thinned area essentially relieves itself. I got this tip from Fred Sinclair eons ago and it’s the only thing I know of that heads off the donut. If you are worried about weakening a case in this area, don’t do it, but I can tell you that’s a moot worry. It’s very common practice among competitive Benchrest and NRA High Power Rifle long-range shooters. That’s how we came to a quick and permanent (well, for the short life of those cases) solution to David Tubb’s donut problems with a 6mm-.284.

neck reamer
This is a “special” reamer, meaning ordered to a custom and specific size. Choose carefully, and it’s an easy fix.

Short aside note that’s being revisited from other articles I’ve done here, but the VERY BEST way to never worry about donuts is to never seat a bullet into this area! That is the reason the better (in my mind) cartridge designs feature long necks.

Glen’s books, Handloading For Competition and Top-Grade Ammo, are available at Midsouth HERE. For more information about other books by Glen, visit ZedikerPublishing.com

Glen’s newest book, America’s Gun: The Practical AR15. Check it out HERE

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RELOADERS CORNER: 4 Firings In, Part Two

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Cartridge cases always fail on the “next firing.” Question is which one that might be. Need to know! KEEP READING

beat case
I apologize for the image quality, but these were taken a while ago. Fortunately, for me, I didn’t have anything on hand that shows even close to the beating this one took. Cracked neck, head crack. Rare to see one case with both of the most common failures. It was attacked by an M14.

Glen Zediker

I’d always rather say it all at once, but the realities of tolerance, and space, sometimes mean I have to split a bigger topic into smaller installments. The “tolerance” part is how many pages you all are willing to scroll through!

This multi-part topic is when, and then how, to check after the progress of changes commencing with the firing on a new case. It’s the “progress of degeneration,” in a way of looking at it because the concern is getting a handle on when enough change in the brass has come about to require attention. Or abandonment. As said then, for me that’s 4 firings. That, as said last time, is when I might see changes that need attention. Also as said, that figure didn’t come out of a hat, but from my own notes in running my competition NRA High Power Rifle loads.

The areas most affected are the case neck and case head area. Case neck walls get thicker, and that was the focus last time. Well, the case head area body walls get thinner. Primer pockets get shallower and larger diameter.

As started on: Brass flows during firing. It expands, then contracts, and when we resize the case, it contracts, then expands (a little). This expansion and contraction makes the alloy harder over the entire case, but with more effect in areas of more expansion, and flow. Replace “hard” with its effect, “brittle,” and that’s a clearer picture. This increasing hardness influences its reaction to being sized or otherwise stretched. As with many metals, bend it back and forth enough times and it will break. It will also fail if it loses enough resilience, or thickness, to withstand the pressures of firing.

Case Head
When a case is under pressure during firing, the brass, like water, flows where it can, where it’s more free to move. Of course, the chamber steel limits the amount it can expand. The case shoulder blows fully forward and the case base is slammed back against the bolt face. There is, therefore and in effect, a tug on both ends — it gets stretched. The shoulder area is relatively free to expand to conform to the chamber, but the other end, the case head area, is not. Since that’s the area of the case with the thickest walls, it doesn’t expand “out” much at all. What it does is stretch.

The “case head area,” as I refer to it here, is the portion of the case above the web, which is just above the taper that leads in to the extractor groove. The “area” extends approximately an eighth-inch up the case body.

case pressure ring
Here’s a “pressure ring.” You’ll see this after firing, if you see it. And, if you see it, that case is done. The bright ring indicates excessive stretching, which indicates excessive thinning.
head separation pic
Closer view of another sectioned case. This one here was fixin to pop. 

That portion of the case does not fully expand and grip the chamber, but the area immediately ahead of it does. So the case body expands and grips the chamber, and that last little bit back to the base can and does move. It stretches. If you see a ring circling the case, noticeable because it’s lighter color than the case body, and it’s in this area, I’d say that case is done. The ring will be evident after firing, not after; don’t confuse a shiny ring around the case in this area with what can be normal from sizing, especially if it’s been a hotter load. That is pretty much a scuff from the sizing die squeezing down this expanded area.

And that’s right where a “head separation” occurs. It can crack and also blow slap in two, and that’s the “separation” part of case head separation.

This is a spot to keep close watch on as cases age. It is also the area that is more “protected” by sizing with less case shoulder set-back. That is, pretty much, where the freedom for the stretching movement in this area comes from (the case shoulder creates a gap). However! As said many a time, semi-autos need some shoulder set back for function, and it’s the reason to use an accurate gage to determine the amount of set-back needed.

case head separation
Ultra-high-precision gage, made by me. Not really. It’s a selectively bent paper clip, and running this down inside the case and and then back up the case wall can signal a dip-in in the head area, which signals thinned walls. Feel it? Case is done.

Some folks unbend a paper clip and run it down inside a case and drag it up against the inside case wall as a sort of antenna to see if they detect a dip-in near the head area, which would indicate that the wall in this area has been stretched thinner. If there’s enough to feel it, that case is done.

Since I’m working off this “4 Firings In” checklist, if you’re seeing a sign that a head separation might be nigh in that few uses, chances are the shoulder set-back is excessive, and also too may be the load pressure level.

Primer Pocket
Another case-head-area and pressure-related check is the primer pocket. As said, the primer pocket will get larger in diameter and shallower in depth each firing. As with many such things, the questions are “when” and “how much,” and the main thing, “how much?”

If the pocket gets excessively shallow, and that’s judged by a primer that seats fully but isn’t at least a tick below flush with the case base, there could be function issues. There’s a risk of a “slam-fire” with a semi-auto that uses a floating firing pin, and, if there is actual protrusion, that has the same effect as insufficient headspace.

primer pocket uniformer
A primer pocket uniformer can reset the depth of a shallowed primer pocket to what it should be, but the real test for me is how easily the next primer seats into it. If it’s significantly less resistance, I’ll say that case is done.

Shallower can be refurbished. That’s a primary function of a primer pocket uniformer. Larger diameter, though, can’t be fixed. I’ve mentioned in another article or two that, any more at least, my main gauge of load pressure has become how much primer pocket expansion there’s been. I judge that without using the first gage, well, unless my primer seater is a gage. If a primer seats noticeably easier, that’s the clear clue that the pocket is too big. Another is seeing a dark ring around a fired primer, indicating a little gas leakage.

Measuring primer pockets is a waste of time, say my notes at least. First, it’s not easy to accurately (truly accurately) measure a pocket, especially its diameter, but, that’s not really what matters. It’s how much grip there is to maintain the primer in place during firing.

I pay close attention to resistance in primer seating and won’t reuse a case that’s too easy.

Good deal on what I think is good brass, especially if you’re an AR15 loader — HERE

Glen’s books, Handloading For Competition and Top-Grade Ammo, are available at Midsouth HERE. For more information about other books by Glen, visit ZedikerPublishing.com

Glen’s newest book, America’s Gun: The Practical AR15. Check it out HERE

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Yesterday’s Scandal, Today’s Mandate: Anti-gunner Embraces Operation Choke Point as Official Policy

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Maloney Baloney! Shades of OCP have reappeared in a re-emboldened anti-gun House majority, as well as in their media and plutocratic enablers. READ MORE

maloney

SOURCE: NRA-ILA

Last Tuesday, U.S. Rep. Carolyn Maloney (D-NY) unabashedly embraced the tactics behind one of the most shameful policies of the Obama era, openly using the guise of her federal authority to berate and not so subtly threaten a bank for lawfully serving businesses that don’t reflect her political views.

While the media did their best to protect Barack Obama and his administration from any hint of scandal, two gun related issues managed to stain the White House with considerable and widespread disrepute.

One concerned a program to secretly “walk” guns from American firearm dealers directly into the clutches of ruthless Mexican drug cartels, while at the same using the resulting violence as a pretext to call for increased firearm regulation in the U.S. The officials involved dubbed this Operation Fast & Furious. It was only the death of U.S. Border Patrol Agent Brian Terry, killed in a shootout that involved one of the “walked” guns, that finally forced the issue into the national consciousness.

The other scandal involved federal regulators pressuring banks and payment processors to sever ties with businesses that were completely lawful but that offended anti-gun sensibilities. These included members of the gun industry. This program was known as Operation Choke Point (OCP), and while no fatalities have been attributed to it, the scheme struck at the heart of the rule of law.

In the case of OCP, Department of Justice and Federal Deposit Insurance Company officials provided sworn testimony to Congress denying that regulators were pressuring banks to drop business the regulators found morally objectionable. Apparently, they suggested, the banks just misunderstood the “risk management” guidance they were being provided. In time (after considerable damage had already been done, and the banks thoroughly understood their unwritten marching orders), guidance documents were revised to “clarify” the regulators’ “true intent.”

The NRA and others have already been reporting on how shades of OCP have reappeared in a re-emboldened anti-gun House majority, as well as in their media and plutocratic enablers.

But an oversight hearing by the House Financial Services Committee on Tuesday provided one of the clearest and most shocking examples to date of how anti-gun Democrats are now willing to embrace as official policy what was still treated as scandal under the Obama administration.

The title of the hearing was “Holding Megabanks Accountable: An Examination of Wells Fargo’s Pattern of Consumer Abuses.” Wells Fargo, not coincidentally, provides banking services to the NRA.

The only witness at the four hour plus hearing was Wells Fargo President and Chief Executive Officer Timothy J. Sloan. Mr. Sloan had the unenviable task of serving as punching bag during an extended production of Political Outrage Theatre. The entire premise of the hearing was that Wells Fargo might very well have to endure yet more regulation and oversight — or perhaps be broken up altogether — unless Mr. Sloan provided satisfactory answers to committee members’ questions about the bank and its business practices.

Maloney, for her part, excoriated Mr. Sloan and Wells Fargo for refusing to follow the lead of other national banks that had refused or severed business with members of the gun industry that did not “voluntarily” adopt certain gun control “best practices” that exceed the requirements of federal law.

These practices include banning long gun purchases by young adults eligible for military service and refusing to recognize the 3-day default transfer option that gun dealers may exercise if the FBI does not complete a background check. They also just happened to mirror policy goals that anti-gun Democrats — a category that includes Maloney herself — have been pursuing through legislation they have not to date been successful in enacting.

Maloney, in other words, was not accusing Wells Fargo of having done anything illegal by transacting with members of the firearm industry. Rather, she was criticizing the bank for not imposing anti-gun rules that Congress itself has failed to adopt.

Maloney noted that Wells Fargo does have corporate “human rights” practices that in some cases exceed legal and industry standards. She then mentioned the Parkland massacre, as if Wells Fargo were somehow complicit in the acts of a deranged murderer who had nothing to do with the bank and who had been given authorization to buy the gun he used in his crime by the federal government itself via its background check system.

“Why,” Maloney demanded to know, “does Wells Fargo continue to put profits over people by financing companies that are making weapons that are literally killing our children and our neighbors? … How bad does the mass shooting epidemic have to get before you will adopt common sense gun safety policies like other banks have done?”

Given the backdrop of Operation Choke Point, Maloney might as well have asked, “Federal regulators and big city newspapers have browbeaten your competition into submission on the issue of servicing firearm industry clients. How dare you defy their wishes and continue to do so?” She also invoked the shibboleth that school shootings are increasing, a premise that research refutes.

Mr. Sloan calmly answered, “We don’t put profits over people. We bank many industries across this country.” He continued, “We do our best to ensure that all of our customers who we bank follow the laws and regulations that are in place on a local and a state and a national level.”

Maloney then interrupted, insisting that the bank’s commitment to gun control should be as strong as its commitment to human rights.

Mr. Sloan, however, stood his ground. “We just don’t believe that it is a good idea to encourage banks to enforce legislation that doesn’t exist.”

He didn’t add, but he could have, that respect for human rights also necessitates respect for the fundamental rights of self-preservation and self-protection.

The entire exchange can be seen on this video, starting at 48:03.

Needless to say, no business in America could survive if it had to comply not just with all the binding laws that regulators foist upon the country’s companies and employers but with the personal sensibilities and politics of all 535 federal legislators, plus those of thousands of federal bureaucrats.

Nor could any business survive if it had to answer for every unaffiliated person who abused or misused one of its products or services.

That is why America is often said to be a country of laws, not men. That principle has provided the most stable and prosperous economy and business environment the world has ever known.

That stability is threatened, however, by those like Maloney and others who would rule by intimidation and humiliation rather than by duly enacted legislation.

 

RELOADERS CORNER: 4 Firings In

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Along with all the other operations we do to them, cartridge cases also need maintenance. A good question is “when”? That’s next… KEEP READING

old case

Glen Zediker

I tend to write much of what I do for those who reload for production. Those are folks expecting good utility in exchange for the expense and effort: a reliably-performing round of ammunition, over and over again. They’re loading and reloading because they like to shoot. It’s a big bonus to most, and I include myself in this group most of the time, if that good performance comes with a minimum of effort. Clean, size, prime, fill, seat, shoot. Five steps to get to the one thing that matters most: shoot! I am also in another group some of the time, not as often now as I once was, and those folks may add a few more steps before getting to the “shoot” part (case prep mostly).

It would be wonderful if that simple cycle endured without end. But it won’t.

Overall case condition after X-many firings varies A LOT because of a lot of factors, variables. What matters is getting a handle on it. I look over each case each time I load it, but I don’t break out the measuring tools. That’s not neglect. There is never (ever) any excuse for neglect. That’s not what this is about. It’s about working out a responsible, reasonable, and realistic schedule for when to take a close look at the progress in condition that new batch of cartridges cases has followed after some time.

In my experience, which is what’s in my notes, I say that’s 4 firings.

I went through the per-use checks enough times to know the schedule one brand and lot of brass, used with the same loads in the same barrel, follows with respect to changes. And by that I mean when changes require attention. I’m also starting with prepped cases, including trimming, before their first firing.

Let me make clear that I’m not suggesting that 4 firings is maximum case life! What I am suggesting is that this is the point where it’s likely to see measurable influences from use and reuse, and, as such, that it can be measured. That’s what we’re after now: take a check to see what’s happening, and that also is a big help toward getting clues about where and when these changes might get noticeably influential.

So, to be clear: the case has been fired four times, reused three times. Next loading, if there will be one, will be for the fifth use.

chamber reamer
We, or more correctly, our cases, are at the mercy of this thing: a chamber reamer. It sets the amount of space the case can expand into.

Changes
Continuing to use and reuse cases, we’re not really using the same cases each time. The cases change, and much of the change comes from material flow, which is brass.

Here’s how it goes, which is to say here’s how it flows: Case neck walls get thicker. The case head area body walls get thinner, over a short span of the body. Primer pockets get shallower and larger diameter. Overall, the alloy hardens over the whole case.

As gone on about a few times in this spot, there’s going to be more change in cases run through a semi-auto than those used in a bolt-action. That’s because of the necessarily additional (comparatively speaking) sizing and also the additional stress resulting from the firing cycle. There’s more flow because the cases are free to expand more.

drop bullet
A simple, and important, test to check if case necks walls have thickened excessively is to take a fired case and drop a bullet in it. If it won’t drop without resistance, stop! That’s way too much.

The Neck
All case necks expand to whatever the chamber allows. There’s no relationship between that and sized dimension because, clearly, there has to be a small enough neck inside diameter to retain the bullet. It is, though, one of the reasons case necks tend to give up quickest (plus it’s the thinnest-walled area on a case).

The case neck is my primary concern, and the first thing I check. If the walls get too thick it’s possible to cut the space too close between the case neck and the case neck area in the rifle chamber. There might be interference upon bullet release, and that creates excessive pressure, or sure can. All that depends on what the chamber allows for expansion room.

The most simple check is to see if a bullet will freely drop into a fired case neck. If it won’t, stop! Do not reuse that case as-is. A case that won’t pass this no-tool test has excessively thickened.

Somewhere in your notes should be a figure indicating loaded outside case neck diameter, on new brass. This dimension is exclusive of the sized neck diameter, because when the bullet is seated the neck is going to expand to accommodate the bullet. Another check of loaded outside neck diameter will show if there’s been thickening. If an inside neck sizing appliance is used (a sizing button), then that will tell you also, comparing it to what you also recorded for the new case after sizing it. (And it’s a good reason to always run new brass through your sizing die, even if it’s “ready to go” out of the box.)

I hope it’s clear enough why it’s important to “write everything down.” References, standards are big helps.

Direct checks of the neck walls themselves using a suitable tool will show thickening. However! Case necks don’t necessarily thicken the same over the entire height of the case neck cylinder. Remember, the brass is flowing so moves in a direction, and that part of the case has a wave going forward, toward the muzzle. There can and likely will be a tapering from thicker to thinner. Measure at more than one point.

Safety is one thing, and the most important thing, and then the other thing is accuracy. Case neck “tension” needs to be consistent from loading to loading to get reliable accuracy.

Fixing it? An inside case neck reamer is the easiest and most direct means. However! Make double-dang sure you know the numbers and therefore how and at what point to use it! Many are intended for use on fired (not yet resized) necks. Others are a specific dimension that you may or may not be able to specify. Thinning the case neck walls using an outside case neck turner is another direct remedy. A little tedious.

forster reamer
The best way I know to remove material to refurbish overly-thickened case neck walls is an inside case neck reamer. This is a Forster, designed to work with their case trimming base. Trick is knowing the case condition it was designed to be used with. This one is dimensioned for use on fired, unsized case necks (it’s 0.003 under bullet diameter). Run it on a sized neck and way too much brass comes off. Various sizes are available.

Reamer or turner, though, this job hasn’t finished until the refurbished case has been run through your usual sizing die, and checked again for diameter.

Well, so much for this here and now. Out of room! More next time…

See REAMERS HERE

Glen’s books, Handloading For Competition and Top-Grade Ammo, are available at Midsouth HERE. For more information about other books by Glen, visit ZedikerPublishing.com

Glen’s newest book, America’s Gun: The Practical AR15. Check it out HERE

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RELOADERS CORNER: Choosing Your Brass

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It’s not all the same! Depending on needs and application, there are three decisions that can have an impact on your satisfaction. READ MORE

norma brass

Glen Zediker

Last time I offered a few ideas on loading the same cartridge for use in different rifles. Essential message in that was, in one word, “compromise.” There’s some give and take when we’re trying to please more than one at time, as such is life…

Choosing cartridge cases is a little, to a lot, the same. Different rifles, different action types, different uses, different budgets, all suggest input that helps determine what works best, all around.

There are three things to consider, maybe four.

One is the action type. Semi-autos need “tougher” brass. That, overall, means “harder,” not necessarily thicker. Due to the resizing requirements for good function, which means a little “more” in all areas, there’s likewise more expansion in each subsequent firing. Brass made of harder alloy is less, not more, susceptible to failures — by my experience. Considering the elastic and plastic properties of brass, harder exhibits a little less effect from each.

I prefer harder composition brass for a bolt-gun too. Most NRA High Power shooters do. Reason? It runs better! There’s less “stickiness” in running the bolt for rapid-fire events.

Two: case capacity. They are not nearly all the same! My experience has shown me that more capacity is better, and that’s especially if we’re wanting to edge toward max-pressure loads. Even though the pressure generated inside the case using more (larger case volume) or less (smaller volume) may get to the same level, there is usually more net velocity (at the same pressure) when there’s more room in the case. If it didn’t matter then other things done to expand case capacity (like shoulder angle changes) wouldn’t matter either.

cartridge case capacities
Case capacities vary, and, as you can see, a good deal. These .223 Rem. are each filled with an equal amount of spherical propellant.

Three: Precision standards. What do you expect, what are you willing to do to get it? After enough experience with enough different brands, that is a legit question. Some brass is “better” out of the box. Cost usually reflects on initial quality. Paying a premium for premium quality, which is three things: consistency, consistency, and consistency. That consistency will primarily, or at least measurably, be in wall thicknesses. The choice there is to buy it or make it. That choice is a balance between effort, value of time, and proven results.

lapua brass
Consider first-use or re-use? Good stuff! And you’ll pay for it! Lapua cuts case prep down to sizing: the case heads are milled, the primer pockets and flash hole are reamed. It’s also a little thick and a little soft. Single-shot-style use in a bolt-action, can’t really beat it, but my AR15 Service Rifle beats it to death.

After using enough different brands with varying levels of costs and claims, I think the most honest thing I can tell you is that you’ll likely end up with the overall “best” brass case you can have shopping in the middle, plus a little, and then getting to work on it. A good commercial “name” brand can be made at least effectively close to the dimensional equivalent of a premium brand, like Norma, but it’s not without effort.

Before spending any time weighing or otherwise sorting cases, do all the prep work you plan beforehand. If any prep involves material removal, even trimming, that influences weight accuracy and, therefore, the viability of segregation by same.

Recommendations?
Yes. And no.

About the time you decide there’s some certain way some certain thing is, they up and change it. I avoid making too many lumped-together, generalized statements about particular brands because of that. However! I can tell you that some of the “better” brands of brass also tend not to hold up as well, or won’t if there’s much working load to load (expansion, sizing). I’m thinking here of the better-known European brands, like Norma and Laupua. Those are near about dimensionally flawless out of the box, but they tend to be a little on the thick and soft side. I use Norma in my .22 PPC because the cost is worth it. If I drive from Mississippi to New Mexico to shoot a match, that’s the least of my expense.

nosler brass
This isn’t cheap either, but I have had good results with it. Nosler is, or can be, ready to go out of the box, including case mouth chamfer. It’s held up well for me in semi-autos.

This is also the reason that every serious competitive shooter I know says to buy up as much of one lot as you can, if you know it’s good stuff. That’s for all components.

Sometimes brass chooses you!

As said last time on the “Multiple Gun” loads, if you’re mixing brass things like case volume do factor. As also suggested then, the best solution is to pick a load that’s in around the 80- to 90-percent range of max. I mix brass all the time. I shoot quite a lot of factory ammo and, yes, I save each case we can retrieve. I clean them all, size them all, and fill them with a “compromise” load I worked up for can blasting. The need for those excursions is not quarter-minute precision.

If you’re looking to save as much as you reasonably can and still get “good” cases there’s honestly nothing wrong with Lake City. The more recent production 5.56 measures pretty well, and it’s tough, and relatively high-capacity. I sho can’t vouch for any other headstamp on mil-spec ammo beyond “LC.” However! I suggest purchasing it prepped. Avoid “range dump.” A big issue with once-fired is which chamber it was first-fired in. Avoid .308 Win. (7.62 NATO)! You DO NOT want to deal with M60 or Minigun leftovers.

lc nm brass
This is LC Match 7.62. No primer crimp! For reuse in a semi-auto, it has the right stuff, which means made of the right stuff: it’s hard, tough.

Start HERE on Midsouth. Great deals! Great brass!

Glen’s books, Handloading For Competition and Top-Grade Ammo, are available at Midsouth HERE. For more information about other books by Glen, visit ZedikerPublishing.com

Glen’s newest book, America’s Gun: The Practical AR15. Check it out HERE

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RELOADERS CORNER: Multi-Rifle Loading

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If you shoot the “same” load for different rifles, here’s a few ideas on getting the most out of it for all of them. READ MORE

multigunj reloading

Glen Zediker

I have a few rifles…

Every time I do a new book I have more. This last time around, in writing America’s Gun: The Practical AR15, I built 10 AR15s, and half of those have the “same” chambering (5.56 NATO). My choices that I can case and then uncase any afternoon for some range time might all have the “same” chamber but they’re each and all, in some measured amount, different.

That’s literally in measured amounts, and more in a minute.

If you (like me) really don’t want to load separately, store separately, and use separately, then the only real choice is to employ a “lowest common denominator” tactic. With only one exception, I don’t load uniquely for any of these guns. I pretty much just want a sack-full of ammo at the ready. The one I load uniquely for has a tuned gas system (it’s a practical competition “race gun”).

old and new AR15
Both straight up NATO chambers, but the little one won’t run what the big one will. It’s a gas system architecture difference, and a little more challenge to find a “universal” load. Rifle-length gas systems like on my retro “602” M16 (left) are, by the way, more tolerant of load variations than tricked out short guns like the brand-new USASOC URG-I (right).

Variables
Assuming all the rifles have the “same” chamber, meaning only that the barrel stamp is the same, there still exist differences. There are differences reamer to reamer, and, depending on the operator, there might (will) be differences in headspace, and leade. They’re likely to be tiny, but tiny can matter. Some manifestations of pressure have some to do with the barrel bore (land diameter for instance).

I measure spent cases for all the different rifles. They don’t measure nearly all the same! Of all the set-by-sizing dimensions, cartridge headspace has shown the most variation in my samples.

That, also, is a very important dimension to set. As gone on (and on and on) in RELOADERS CORNER, the idea is to get adequate case shoulder set-back to ensure function, and also to keep it to the minimum necessary to prolong case life. The minimum necessary runs from 0.003 for a semi-auto to 0.001 for a bolt-action.

To set this dimension for multiple rifles that use the same batch of ammo, the means is pretty easy to anticipate: find the gun with the shortest headspace, set the die to set back the case shoulder where it needs to be for that one, and live with it.

If you don’t want to give in thataway, but rather prefer (or at least don’t mind, two technically different outlooks) running multiple dies with multiple adjustments, and keeping the ammo segregated, then here’s more.

I’ve had really good experiences using a turret press. For most rifle needs, one with, say, four spots will allow the use of two sizing dies, maybe three (depending on what occupies the other locations). These dies can be uniquely adjusted for cartridge case headspace. Of course, it’s easily possible to just swap dies in and out but the turret keeps them put and saves a step.

redding t7
A turret press is a sano solution to maintaining differently adjusted dies. Redding and Lyman both make good ones. This is a Redding T7.

If you’re a bolt-gun shooter and have a couple or more rifles that run the same cartridge, and if you’re wanting to get the most from your efforts in loading for each, you might consider this next. Redding has long-made a set of five shellholders with varying heights. They allow a shellholder swap on the same die to alter case headspace, for example. There are also shims available that go under the die lock ring to provide for die body height variance. This sort of setup lets the handloader alter-adjust headspace without readjusting the die.

redding shellholders
Redding Competition Shellholder set. Five shellholders, each 0.002-inches different heights. This allows, for one, different case shoulder set-back using the same die as set.

Levels
Now. As far as lighting on a load that they’ll all shoot their absolute best with. Sorry to say, but “not likely.” There sometimes seems like there is more mystery than there is known in “why some shoot better” with one load. And when I say “load” I’m talking about the dose, the amount of propellant. What that ends up being mandates at least some effort in evaluating more than one rifle when working up to a point you’ll call it “good.”

NATO-spec ammo is hot and getting hotter! I’m talking about true NATO-spec, not just lower-cost ammo sold in a “plain box.” This isn’t about NATO ammo, but it was for me. The difference between pressure levels of NATO and, say, a commercial-made .223 Rem. “match” load are enough that two of the guns won’t even run with that. I set up these guns from the workbench respecting NATO pressures, and that, in most cases, meant firming up the “back end”: heavier buffers and springs.

My good old “do it all” load no longer exists in my current notes. Amazingly, to me at least, it’s up the velocity equivalent of about a grain and a half from what I used to bust up clods and cans with. It’s also a different propellant (now H335).

No question: pressure symptoms must also define the “lowest common denominator” when loading the same for multiple guns. Since I also have to consider reliable function in my own example, and as just suggested, I’m loading up a little nearer the edge. I carefully evaluate spent case condition from each rifle and anything that reads or appears remotely as an excessive pressure sign means I’ll knock a universal half grain off the group load.

The preceding is a specially-adapted excerpt from Glen’s newest book, America’s Gun: The Practical AR15. Check it out HERE

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Glen’s books, Handloading For Competition and Top-Grade Ammo, are available at Midsouth HERE. For more information about other books by Glen, visit ZedikerPublishing.com

LINKS
TURRET PRESSES

COMPETITION SHELLHOLDER SET

M14s and M1As: From Magazine Dreaming to Camp Perry Competiing

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Dreams can come true! Here’s a story of a lifetime of fascination that culminated in the pinnacle of competition. READ IT ALL

camp perry m1a

SOURCE: Team Springfield, Steve Horsman

My first memories that took me down the path of firearms and shooting came in the 1970s. I remember looking at old gun magazines, specifically Guns and Ammo, all of the time. Most of those magazines were dated from the late 60s through the mid to late 70s. #CollectorItems

That was when my love affair with firearms and shooting started. I was a very young boy, not quite 10 years old. The Guns and Ammo magazines, for me, were just like the Sears Roebuck Christmas catalog. I remember looking through both and daydreaming about all of the stuff that I wanted for Christmas. I would study the pictures and read the articles, as I was dreaming about the guns that I wished I had and the hunting adventures I wanted to be a part of.

Hard to believe that that was nearly 45 years ago. #LifeMovesFast

M14 DREAM
During my younger years, there were several firearms that I was attracted to; obviously for how they looked, but mostly because of their capabilities and the history that surrounded them. One of my favorite guns was the M14 rifle, and my admiration of this rifle has never waned, even after 4 decades. Again, the sweet appearance is was what first drew me to it. It had classic lines that resembled the M1 Garand, but it had the more modern box fed magazine. I just wasn’t a fan yet of the M16 / AR16 rifle of that time, as it looked, dare I say, “cheap” to me.

As I got older, the desire to own an M14 rifle only grew stronger. What I didn’t know at the time though was that many of the M14s I was drooling over were (most likely) Springfield Armory M1As. Never in a million rounds, would I have imagined I would one day be working for “the” gun company.

camp perry range

DISPOSABLE DINERO
Jump to the late 1990s when I was finally able to buy my first M1A! It was a brand new Springfield Armory “Loaded” M1A Model. I was in M1A heaven! It had everything I wanted, and I loved that rifle. I shot it in my first and only (as of this writing) High Power match, and once at the Superstition Mountain Mystery 3-Gun Match.

From the moment I got it, until the day a good friend talked me into selling it to him, it performed perfectly. If you’re like me, you know that it’s always hard to get rid of a gun — I had the original “Loaded” Model in my safe for over 10 years, and was always a proud owner. But in the end, I really wanted the flagship M1A Super Match.

As things often happen though, I bought not the Super Match, but the Springfield Armory Scout Squad model. Probably because every time I had the chance to shoot one of these guns, I started to like it more and more. At the time, it fit my needs for a battle rifle better than the Loaded Model did, and the Super Match was just a little out of reach dollar wise.

I still have that Scout rifle, and have “made it mine” by removing the Scout scope mount, and adding a wooden hand guard in place of the plastic one that comes stock on that model. That rifle is a tack driver and I can hit 10-inch steel plates at 500 yards all day long. #Gratifying

DREAM JOB
As life fast forwarded and my LE career was wrapping up, I was fortunate enough to become involved with Springfield Armory. (That little-boy-paging-through-gun-magazines’ dreams were definitely exceeded!)

I also found myself interested in shooting rifle events again. And, it just so happened that in January of 2015, my buddy Rob Leatham called and asked, “Do you want to go to Camp Perry and shoot the M1A Match with me?”

I immediately knew the answer, but wanted to play it cool. I called him back a few days later… or was it a few minutes later? And since Camp Perry was on my bucket list, and life moves really fast, and of course I wanted to go, I excitedly said, “OH YEAH! “ But then I tell Rob that the only M1A I have is my Scout, and I ask, “Can I use that?” He said I could, but also suggested that he had a few rifles that might be better; more accurate, and actually set up for High Power style rifle shooting.

Who am I to turn that kind of offer down?

Next thing I know, Rob and I are heading out to the range to begin zeroing his rifles so we can practice. Rob’s two rifles were basically Super Match set ups. He chose the really nice Camo Super Match and he loaned me the older wooden stock rifle. It was basically a predecessor to the current Springfield Super Match, and it was really accurate and shot awesome!

camp perry tower

After months of practice, we finally arrived at Camp Perry. I was humbled by the history of the place and duly impressed by the size of the ranges. I was told it is the largest shooting range in the country. It’s truly an amazing sight to experience!

Rob and I shot the match, and of course, he barely beats me! My guess is it had to be the rifle he shot, versus the rifle he “loaned” me to shoot! 🙂 #Setup

CAMP PERRY EFFECT
Thanks to Camp Perry, I was now really ready to get the M1A Super Match that I’ve always wanted, and upon my return, I promptly placed my order at Springfield. I got my rifle and, as advertised, it was awesome! I ordered the Camo fiberglass stock model and immediately took it to the range for zeroing. It shot every bit as well as I expected and anticipated — it was outstanding!

Fast forward to the Summer of 2018, and I make my way back to Camp Perry to participate again in the annual M1A event with MY Super Match. Needless to say, the Super Match shot great and I destroyed Rob’s score!* See, I told you he gave me the less-accurate rifle!

*Did I forget to mention that Rob didn’t actually shoot the match in 2018? 🙂

M1A MANIA
Joking aside, this year’s Springfield Armory M1A Match at Camp Perry had over 350 shooters — That firing line is another incredible sight to see! I spoke with so many other competitors while there, and they all said their love of the M1A rifle is the reason they shoot this match. Most stated too that they shoot their M1As at local High Power matches all throughout the year.

I also have several friends who currently shoot and have shot High Power rifle competition for many moons. In a nutshell, all of them have told me the same things about the beloved M1A:

It is extremely competitive.
It does very well in the high-power matches.
It holds its own against anything on the firing line.
Most prefer the lower recoil of the AR-pattern rifles — which is why they shoot them.

And without exception, whenever I go to the range and break out my M1As, I am asked by other shooters if they can look at my rifle. After they check it out, I usually get several questions, and most of them eventually tell me, “I’ve always wanted an M1A…

m1a

RELOADERS CORNER: Fire-forming

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New cases? Decisions you make before that first firing have a lot to do with future success. Read why (and how) HERE

Glen Zediker

case segregate
I segregate my new cases before firing because I need to know which are for which. Do not first-fire cases using a lighter (less pressure) load unless you intend to continue to use that load in those cases for subsequent firings! I’ll use “old” 300- and 600-yard cases for offhand practice, but never the other way around!

The past few articles I’ve been begging indulgence from all the bolt-gunners out there by focusing on a few semi-auto-based topics, and so this time I’ll get to something of more interest to them (and it’s also of interest to “all of us”). In practical terms, which is living with reloads, it is at least of as much interest, or at least importance, to someone running an AR15 (if they’re looking to get maximum on-target performance from it). Subsequent case life has a lot to do with how you go about firing that first time.

So: definition: “Fire-forming” is a term usually associated with describing changing a cartridge from its original or “parent” state into another state, which is a non-standard cartridge, when it’s first-fired in the non-standard chamber. Like making an Ackley-Improved version of a standard cartridge, or converting a .250 Savage into a 6XC. In other words, the firing itself expands and reforms the case to the shape of the new chamber, and the case that emerges is then the new cartridge.

But! All cases are fire-formed to the chamber they’re first-fired in.

Details: Brass alloy is both plastic and elastic. That’s the “technical” reason changes in a fired case can and does occur in the first place. Plastic means that brass can expand and flow to fit the chamber, and retain its new shape. Elastic means that it doesn’t fully and completely mold itself to become a new mirror of the chamber. It “snaps back,” retracts from its maximum expanded form. If it didn’t it wouldn’t want to come back out of the chamber. That “snap-back” amount is predictably 0.001 inches.

case mushroom
Here’s a good example of the plastic property of brass alloy. This is a .250 Savage case that’s been run through a 6XC sizing die. Next step is to load it up and fire it in the 6XC chamber. It comes back out looking just fine! By the way, the little dings and creases we see in spent cases sometimes are really nothing to worry about: they’ll iron out after firing again.

On any rifle with a “standard”-dimension chamber, a new brass cartridge case will be smaller than the chamber. Has to be. It wouldn’t fit if it weren’t. A “standard” chamber, here, means there may and likely will be small variations from chamber to chamber (reamers vary uniquely, as might the operator’s preferences and judgment regarding how “tight” the headspace will be), but nothing intentionally has been done differently to alter the chamber beyond SAAMI-spec dimensional tolerances. Anyone who has loaded for the same cartridge for more than one rifle, and who has recorded pre- and post-fired case dimensions, knows that it’s common for there to be at least a thousandth or two, or more, variance. That’s all fine, as long as it’s within spec. Some custom-done barrels might have a chamber that’s intentionally different than SAAMI blueprints, and that’s a whole different topic.

Back to it: Since the brand-new cartridge case is smaller than the chamber it’s going into, it’s going to expand, grow. That’s clear.

ppc tallboy
Here’s a .22 PPC (left) next to a wildcat version, the “Tallboy.” There’s a whopping lot of permanent stretch to make this round (which is the precursor to 6.5 Grendel by the way). It is really important that this initial firing be done with a stout propellant charge. They would, not may, fail if the first firing didn’t fully expand the shorter PPC case.

So, there are two “forms” fire-forming can take. As said, no matter what else, all cases are formed to the chamber on their first firing. However, for some there can be some benefit from approaching that initial firing following a method or means to establish the set-in behavior of that case on subsequent firings and reloadings.

Here’s why some planning and procedure matters: Brass alloy has a “memory.” This is, more technically, called a “shape-memory effect,” and is shared by some other alloys also. It expands (and contracts) in a consistent pattern each use.

The first firing establishes that pattern. On subsequent firings, less is okay, but more is not. Lemmeesplain: I strongly recommend first-firing with a stout load, or at the least the stoutest load you plan on running through that case in future uses. When I segregate my new cases, I’m sorting them based on their function for me. My best go to the “600-yard” pile, then to 300 and then to short-line. Those are three different loads. I need to know which cases are for which before I make the initial loading. Fire-forming with a lighter load and then using a nearer-to-max load in that same case will, not can, result in premature failures in that case. It doesn’t seem to matter much going the other direction. I would never charge up my 600-yard load in a case formed using my 200-yard load; there are significant pressure differences in those two.

If it’s necessary to reform through firing, making a new cartridge case, there are a few different methods I’ve seen used, but, what really matters is that the case fully forms to the new chamber. The usual influential changes occur in the case neck and shoulder, and also stretching fore and aft. The bigger the change the more important it is to fire initially with a full-power load. For maximum effect, it’s better to fire-form with something closer to a “max” load than something lighter. Brass gets harder each use, less pliable. Starting life as a new cartridge after that first firing, case life is longer, and better, if the case was fully formed.

dead length seating
For maximum subsequent case life, it’s important that, one, a case fully forms to the chamber. But! Two, also that needless stretching is avoided. To that end, first-firing with the bullet seated to touch the lands minimizes stretch. Reduce the load since this will, not may, raise pressure.

To aid that, a “trick” that helps a lot is to seat the bullet into the lands, firmly. The reason is because that already has the base of the case firmly seated against the bolt face. That prevents the primer strike from moving the case forward, resulting then in additional body stretching (beyond what already might be necessary). If it’s not the routine means used for bullet seating, this tactic requires a reduction in the load. When a bullet is moved from “just off” to “just on” the lands, pressure spikes at least equal to the value of 0.2-0.3 grains of propellant.

Glen’s books, Handloading For Competition and Top-Grade Ammo, are available at Midsouth HERE. For more information about other books by Glen, visit ZedikerPublishing.com