I think you're going to have to check again to make sure they gave the weight of barrels for a 12 gauge frame. However, my 26" 20 gauge small frame barrels are marked 1040. I wouldn't take that gun to South America if someone else paid for the trip. It beats me to death. The 682 20 gauge weighs almost nine pounds and is very comfortable to shoot all day. It has a very meaty Monte Carlo stock and a hard German pad with Shoo-Goo for non stick surface. I would use at least one thickness of PAST shoulder pad and be quite confident that I wouldn't hurt myself.