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I am sure this has been covered before but my question is pertaining to Semi-autos, Crimp or no with bullets without a cannelure? I know that in 308 FGGM and BHA match they are are not crimped and they seem to fun fine through my ar-10.
Not saying that its right or wrong, but I have loaded and fired 1000's of rounds in my LR308 and various AR's and I dont crimp anything but pistol ammo. I have never had any problems.
If your neck tension is right I would ask why you would crimp? I thought crimping was found mostly on MIL ammo? Similar to that they do to the MIL primers?
Bottle necked cartridges shoot better for me with no crimp. I have never had any bullet pushed in deeper from recoil, but I am not shooting 577 Nitro Express.
45 Colt rifle shoots more accurately with a crimp compared to seated long and jammed into the lands. That is different from my bottle necked cartridges.