Interesting. I purchased a Fox 12 one time that had scoring down the insides of the barrels. We surmised (my gunsmith) that someone had loaded nuts/bolts/nails into a shell and shot them at trespassers or stray dogs etc. They could be plainly seen on the insides and were fairly deep and irregular in shape. Nuts/bolts/nails loaded into a shell would probably do that. I returned the gun to the dealer and had no problems.
|