I have one. A late 1800s CS Shattuck, Hatfield, MA, which was given to me by my great uncle, a former market hunter. It is a single barrel, damascus barrelled no forend shotgun with two triggers, the front of which opens it. I bought a few hundred 2 7/8" primed cases from Herters back in '75 and loaded them with black powder, card and fiber wads and about an ounce and three eighths of shot. Killed a goose and won the cartridge division of the WSA summer black powder shoot. Sent a pic to my uncle of me, the gun, and the trophy which he got just a few months before he passed. He said he was sorry he couldn't give me the brass cases, decoys, and loading tools in a wood chest but they'd been stolen during the '64 riots in Detroit.