The gun will be in proof until the bores are .010 over proof. With metric measurements I think it is .008 now. Any way, yes your gun is in proof. We put too much stock into believing proof means it is perfectly safe. I put a lot more stock into wall thickness. I know of two0 guns which recently passed re-proof with barrels as thin as .015 and .016". Now consider they will still be in proof with .009" removed from the bore. That brings them down to .006 which is the thickness of a Coke can. In proof is not everything. .020, in 12 bore gets my slow down attention. That is why I bought wall thickness measuring tools and learned how to use them. If you go to a major SxS shoot see if anyone there can measure the wall thickness for you.
Last edited by KY Jon; 08/16/26 08:09 AM.
