Originally Posted By: jeweler
It's a 1880 gun bores are .737 and .733 bore with .025 thickness at 9 inches he is shipping it to me to check out.I am not sure when it was proofed last.I am only going to shoot black powder probably with it which I am real comfortable with the results.


9" from the breech or 9" from the muzzle.

9" from the breech I ain't shooting it.

9" from the muzzle and I'll run RST's and my low-pressure reloads through it all day long if it's otherwise a solid gun.

I have a J&W Tolley that went through Birmingham proof in 1989 at a wall thickness of .024 - near the muzzle.