Anneal your 43 Mauser brass by heating evenly with a propane torch (I use a cordless drill with a rod loosely in the case to heat evenly) when an even orange drop them into a bucket of water) then I would work the shoulder back in stages such as .50-.45-.41 using whatever dies I had available then trim to length until I could get it to chamber. Then fire form to the chamber will probally only need to necksize when reloading after fireforming later anyway. Then you will start having to determine what needs to be done (maybe reaming neck I.D.) to fit the size of your chosen bullet.

m-4

Last edited by m-4; 07/06/12 03:53 PM.