Quote Originally Posted by Dalo View Post
Dusted some dies off and loaded some 41mag and .454 casul. Having an occasional issue where the brass crinkles. I’ve checked the brass length, within tolerance. Doesn’t happen every time. Both sets of dies are RCBS, I’ve used them successfully in the past. The seating die also crimps. Should I do that in two steps? Seat a batch, and follow with a crimp? I’m perplexed. I realize the .454 isn’t seated to the cannelure.




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In order to crimp consistently all your brass need to be the same length. I rarley crimp for that reason, but if you must I guess the Lee factory crimp die is the bee's knees.


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