How does one evaluate the safety of an old SxS double gun which has several pitts on the inside of both barrels just ahead of the chambers? Rest of the barrel is shiny and appears OK. I know, " have a reliable gunsmith check it" But what does measuring wall thickness tell you? Gun is nitro proofed. Belgian, steel, 12g. with 2 5/8" chambers and from the proofs, was made in the 1900 to 1910 era. I have shot RST low brass shells thru it but now am worried. The pits appear as small black dots. I would welcome opinions!
