Hello Wiredducker, Buy a 10 gauge PARKER SXS with damascus barrels and shoot 12 gauge bismuth out of it by using GAUGEMATES. Gaugemates convert the chamber from 10 gauge to 12 gauge and the old Parker will shoot great for you. See the web site for gaugemates at --- http://gaugemate.com/gms.htm --- Good Shooting To You, Jent