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Nope not all NRA shooters do that, mine have about 20thou jump and still fit in the mag, what is stopping you from doing that to if that's what you want to do? Just single feed them.

I've never seen a NRA target shooter crimp, but then I haven't inspected everyone's ammo.

Are you target shooting or hunting?

I thought crimps for semi autos to stop the bullet moving when loaded into the chamber at speed. Never heard of using it for any kind of rifle target shooting. If you're using a bolt action and...