WB
Old Taffin article includes some necked rounds seating
Friday, March 07, 2025, 15:40

Information on belling and seating with short necked cases. We know about this with some specific GNR rounds. Gary has good notes on this too.

I actually have a .357 SIG barrel for my G23 and want to play with it. The LEE collet crimper might be a good idea, sure enough. I think I can mod it for other applications too. I bought a 9x25 Dillion barrel cheap for the G20/21, but no dies. I’m thinking the SIG dies, crimper, maybe .356 GNR dies will work for carefully making cases and loading a few.

Kudos for Mr. Taffin tackling such a project and detailing such useful technical info. It transitions to many others.

https://americanhandgunner.com/gear/loading-the-357-sig/