Keith, thanks for the information, just what I was looking for. The gentleman whose friend owns the gun said he was going to send me some pictures of the area and I will post them.

In my original post I had told him if the cut area was 16-18" from the breech I felt it could be welded. I am not sure of the make-up on the type of steel the barrels are made of, but being a 20 ga L.C. Smith they are steel and were called Armor Steel.

My post about the tungsten tip hitting the barrels was wrong, that's what would happen if I did it.
I also don't think the welding would harden the steel as it is not a carbon steel.

David