That's a good point but I think that trying to chamber a round with a bolt action would seat the primer far enough to chamber. The action type gives some mechanical advantage/ leverage with the camming of the bolt lugs and bolt handle
thank you to everyone who shared some info. It is nice to be able to ask people with actual experience.
I am still unable to figure out the issue, the full length sizer die seems to be the culprit.
I gave this a quick speed read, so if this was covered and i missed it...sorry.
Does the sized case chamber BEFORE you seat the bullet in the case?
If yes....
Turn your seating die out a couple of turns and screw the seating stem in some to compensate. The seating die is too short and is bumping the sholder back. With no case wall support, the case will bulge at the sholder/body juncture. BEEN THERE ...DONE THAT!!