I have a 54 caliber pedersoli that is a pretty neat gun. It is a double barrel rifle. Has two percussion 54 caliber barrels that you can load. The second barrel is simply on the other side of the stock from the first one. You simply swivel 180 degrees, load another percussion cap and fire your second shot. That said, I mostly hunt Colorado, so it is not legal there. I have used it in Texas once, but just seem to pull out my T/C renegade before the pedersoli.