I've seen one or two mentions that the bores might be chrome lined. It seems to be a stout gun and I'll give it a try with regular 2 3/4" steel duck loads. We don't get lots of shooting anymore and I'll save the goose loads and big shot for another gun. The rice farming in our area has greatly diminished, the marshes have been leased up by big clubs, and our birds have moved to new wintering grounds.