Free: Contests & Raffles.
The only calibers I crimp is auto loaders lever guns and revolvers.
All revolver and semi auto pistol ammo gets a crimp. I've had plenty of magnum revolver loads jump crimp by the time you get to the last round in the cylinder. It helps give a more consistent burn with slow pistol powders as well.Andrew
I crimp revolver ammo and also shotgun shells.