|
Partial sizing works, but as some of the guys above have said, you MUST at least touch the shoulder. If you stop before you size all of the neck and also bump the shoulder, you leave a bit of space between the die and the shoulder. Then, because you are squeezing all the OTHER brass of that case, the brass expands into the only place left - and that causes the shoulder to move forward. You may well end up with a lot of loaded ammo that won't chamber. Don't ask how I know that, OK?
To set up, adjust the die full down against the shellholder, and then back it off a full turn. Size a case. It probably won't chamber. Screw the die down a tiny bit at a time, trying each case in the rifle until the slight amount of resistance you feel when closing the bolt just disappears. (Use a fresh case each time or the gun test won't work.) Then come down a final very small amount (perhaps 1/16th turn of the die) and lock it. Resize and test all the brass again; the bolt should close with only a whisper of "feel." Test again after firing and sizing those cases. If the "feel" is the same after the firing/sizing, the die is set.
|