To crimp or not to crimp bottlenecks
Are you guys crimping bottlenecks for magazine fed bolt action? (taper or Lee FCD)
The "universal wisdom" - which is far less universal than it used to be - was that crimps are for semiautos, not for bolts. But where did that come from in the first place? Is there a difference in the recoil or is it simply because of rounds getting smacked into the front of a magazine? (or more accurately, the front of the mag smacking into the rounds)
I've been reading about potential problems from crimping and a lot of people don't do it anymore, even for semiautos.
I guess tl:dr:
1. Is the reason for suggesting crimp for semiautos because of something different about the recoil or just because of the magazine?
2. If it's just the magazine, then does the same advice apply to magazine fed bolts?
3. Are you crimping your bottlenecks? In which applications?
Crimp - Bottle Neck Rounds.
I never crimp bottle necks.
If there is a powder problem, not burning correctly, a crimp may help. Military test-
https://www.thehighroad.org/index.ph...pace.2285/full
To avoid Delayed Ignition, use a mag primer, seat bullet deeper into the case, use a bulky powder that better fill the case. Increase bullet pull with a crimp, as a last resort. Crimps may hurt accuracy. Doing your own testing is the only way to know.
Lee Factory crimp die better then roll or taper .
Bullets need a cantalore to crimp into.