I bought some used Rocky Mountain brass 10 gauge hulls and a number of them will not fit in the breech of my Spanish made (Zabala maybe) 10 gauge. I'm guessing they fire formed in a shotgun with looser tolerances.

I tried using a steel block with a .846 diameter hole, case lube and hammering them into the hole, but that does not seem to work. Anybody have any other ideas on ways to re-size the hulls?

Thanks

On Edit, I updated my post with the correct diameter; I will also mention I do not have most of the tools many of you have and lack the experience to use them even if I had them.

Last edited by Chantry; 05/17/21 11:00 AM.
I have become addicted to English hammered shotguns to the detriment of my wallet.