Just picked this up at a yard sale. It's a Moore & Sons side lock 12 gauge (not a muzzle loader). It's in very good shape. I haven't started researching it yet, so I thought I would start here on INGO to see if anyone knows anything about these guns. It has some interesting proof marks. Bore is in great shape, and there is only some very minor pitting on the receiver. No surface rust whatsoever.