Thanks for the info. He bought it when he was a teenager and shot a lot of pheasant, duck, and geese with it despite an area of barrel dents about 2/3 the way up. Otherwise the barrels look good no pitting. But he had to fix the stock in high school wood shop when he fired both barrels at once. Learned not to do that again. He said duck hunting everyone knew when he shot because they could hear the barrels ring. A lot of factory nitro loads went thru it. Question, what fluid steel would have been used on this gun in 1877. He definitely proof tested it.