got another question guys. so I've been reloading 120 grain amax with know problems and decided to try some 140 amax. I annealed the brass, sized, checked case length. and here is what's happening. some of the brass loads fine and the others mushroom at the shoulder. I checked the bullets and they measured .262 to .264. case length is 1.920 and oal I set to 2.800 I'm using the same hornady dies. any help would be greatly appreciated.
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