Under the theme of God protects the clueless (Psalm 116:6) with .016" MWT, I personally measured the wall thickness of a 1906 L.C. Smith 16g No. 0E with Good Two Rod Damascus at .016, 14 from the breech which had survived 75 shots with 7/8 oz. at 1145 fps. (about 8000 psi) and 500 3/4 oz. at 1100 fps RSTs without rupture or bulge. The barrels have been retired.