Originally Posted by
markm
The problem we've realized is (since starting to load long range/precision whatever ammo) lot changes are huge. I always thought is was benchrest dogma, but the H322 we're shooting now is different than the old stuff.
I was getting popped primers on some ammo loaded milder than stuff I had success with years before.
I'd just start at the good old 21.6 and adjust from there. As far as trimming, I use the giraud and trim every time. Doesn't take much off, but it chamfers the case neck.