The Firing Line Forums - View Single Post

Rimrod · January 3, 2007, 08:45 PM

You will need more crimp than that whether your bullet has a cannelure or not. Revolver ammo needs to be crimped to keep the bullets from pulling out of the cases from recoil. If the bullet has no cannelure then it should be crimped at the ogive or at the first driving band. Starting at .379 is not safe, you need a crimp beyond "straight". If the Dillon dies have a taper crimp area before the roll crimp is started that may work for light loads but that measurement will not be in any reloading manual, that will depend on how far it taper crimps before the roll starts.

January 3, 2007, 08:45 PM	#16
Rimrod Senior Member Join Date: October 19, 2005 Location: Behind enemy lines Posts: 1,309	You will need more crimp than that whether your bullet has a cannelure or not. Revolver ammo needs to be crimped to keep the bullets from pulling out of the cases from recoil. If the bullet has no cannelure then it should be crimped at the ogive or at the first driving band. Starting at .379 is not safe, you need a crimp beyond "straight". If the Dillon dies have a taper crimp area before the roll crimp is started that may work for light loads but that measurement will not be in any reloading manual, that will depend on how far it taper crimps before the roll starts.