Does anyone have an idea of what a shotgun and barrel hardness should be. I just got my two guns that burnt in a fire up and running. Springs function but need to be replaced. In what range should the SS receiver and blued barrels hardness be ? Have yet to get them to the shop to have them tested. Am really only familiar as to where a knife is in the Rockwell hardness scale. Cannot find any information as to where a guns hardness should be.