Are you using a single-stage press? I may be doing it all wrong but years ago i was getting inconsistencies with .308 brass so after months of pulling hair i opted for buying a total of three rockchucker single stage presses and put each die in its own press. it meant i didn't have to ever adjust the dies and all the brass turned out the same (more or less). also i find it best to use a already sized case that you are happy with to set your die. same with seating and crimp.
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