So I have a fantastic Japanese made Browning Auto 5 12 gauge clone, likely made in the 1980's. It's accurate, dependable and feels awesome in my hands. I've been told I can't shoot steel shot in it because it will tear up the barrel. How true is this? I'd really like to be able to use it to hunt duck in Washington, but duck hunting here requires the use of steel shot. Is there anything that can be done to my barrel that will allow it to use steel? Is there anybody out there producing steel-safe barrels we can retrofit our shotguns with?