Thread the sizing die down to contact the shellholder when the press ram is at its full height. The author does not recommend ever setting a press to “cam-over” because it’s just not necessary. If your press cams, screw the die down until it hits the shellholder at the highest point of travel in the press ram. Then back the die off (up) one full turn. Lightly seat the die body lock ring against the press top, and commence and continue the following process: lube and size the case, check the headspace; adjust the die downward, check the headspace. For a 7/8-14 thread, which is virtually all presses, a full turn equals 0.0174 inches, and an 1/8 turn is about 0.009. That little bit of knowledge helps keep from going too far too soon, and also shows just how fine the adjustments get right at the end. When you think you got it, size a few more cases and read them. When you know you got it, lock the die ring. The author makes an index mark for security, and then installs and removes the die holding only the lock ring, not the die body. Note: the expander/decapping assembly was removed from this die just to point out that it’s not necessary to establish the sizing amount.