.016" is the thickness of the cover on a book of matches, or about the thickness of 5 average sheets of newspaper. To me that's not very comforting for a gun barrel. It may hold the pressure, but there is not much for margin of safety nor much strength to resist denting. There are too many good guns with adequate barrel thickness to risk shooting junk. Some people also get away for a long time driving on bald tires... until they don't.
This would be a good time for Doc Drew to put up that picture of the guy holding the blown-up shotgun with his hand missing a finger.
