My steel-shot sxs is a Miroku Daly Model 500 bored IC and Mod. Someone before I bought it (I think Jim Legg claimed he re-did it) had oil finished the stocks and hung a magnum recoil pad on it. It has 2 3/4" chambers but the short steel shells in #2 seem to handle mallards and geese just fine. I don't know how many steel shells it has digested (a lot though), and I don't see any damage to the gun at all...Geo