The Firing Line Forums - View Single Post - Is it ok to roll crimp an uncannelured bullet?

**Mike Irwin** · June 29, 2000, 06:03 PM

It's not a great idea as you can fold the case neck, damage the bullet, or both.

It's best to use a slightly undersized expander ball in your sizing die. This should give you enough neck tension that you won't have to crimp.

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Beware the man with the S&W .357 Mag.
Chances are he knows how to use it.

June 29, 2000, 06:03 PM	#2
Mike Irwin Staff Join Date: April 13, 2000 Location: Northern Virginia Posts: 41,390	It's not a great idea as you can fold the case neck, damage the bullet, or both. It's best to use a slightly undersized expander ball in your sizing die. This should give you enough neck tension that you won't have to crimp. ------------------ Beware the man with the S&W .357 Mag. Chances are he knows how to use it.