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Old February 23, 2012, 07:04 PM   #27
Slamfire
Senior Member
 
Join Date: May 27, 2007
Posts: 4,083
Only crimp for tubular magazines and weapons with exceptionally high cyclic rates, and elephant guns.

Never crimp a match bullet.

Crimping always swages the soft inner core of a bullet and will deform the jacket at some crimp level. Like what a Lee Crimp die did to these 6.5 SMK’s.



Deforming the core of a bullet and deforming the jacket will change the center of gravity. As that bullet rotates, with a center of gravity now outside the center of rotation, this will add inaccuracy.

No one, and I mean no one, who is a good competitive shooter, be it across the course, long range, bench rest, crimps their bullets. Period. I have been squadded with National Champs, I have friends who are national champs. No one crimps match bullets. If there was the slightest, tiniest tiny advantage, everyone would crimp.
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