on straight wall pistols for semi-autos the case diameter at the mouth when crimped has specs that should be adhered to for good chambering as the case headspaces on the mouth.
for revolvers (I load for only 2 - the .357 [I'm fairly new at this one] and .45 AR so there's not a lot of expertise in my statement here) the crimp is a roll crimp usually into a crimp groove or lube groove.
rifles are a hole different critter excepting many slugs have crimp grooves - this you should do read-up on as you can get into trouble with hi-pressure rifle rounds easily.
Bullets are seated into brass cases with a combination of neck tension and crimp in some calibers. In other calibers, it's simply neck tension that holds the bullet in place.
You put an over shot card wad over the slug, then use glue or water glass to seal it around the edges. You could also roll crimp, but your brass will wear out pretty quickly. Using a shot card, your brass will last a LONG time.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.