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dmazur · February 19, 2011, 03:35 AM

Sierra Bullets has a series of pages on their site, and one of them covers crimping -

http://www.exteriorballistics.com/re...sics/crimp.cfm

This covers the basics of taper vs. roll crimping. Not every possible reason for a variation in technique.

By "buries", I was trying (and failing) to describe what I've seen when someone applied a heavy roll crimp to a .45 ACP case...the case mouth is buried in the bullet. The edges are gone, not available for headspacing.

I'll admit I've never tried roll crimping .45 ACP, but I'm not too old to learn something new.

February 19, 2011, 03:35 AM	#5
dmazur Senior Member Join Date: July 5, 2007 Location: Pacific NW Posts: 1,310	Sierra Bullets has a series of pages on their site, and one of them covers crimping - http://www.exteriorballistics.com/re...sics/crimp.cfm This covers the basics of taper vs. roll crimping. Not every possible reason for a variation in technique. By "buries", I was trying (and failing) to describe what I've seen when someone applied a heavy roll crimp to a .45 ACP case...the case mouth is buried in the bullet. The edges are gone, not available for headspacing. I'll admit I've never tried roll crimping .45 ACP, but I'm not too old to learn something new. __________________ .30-06 Springfield: 100 yrs + and still going strong