I picked up a 1830's Percussion shot gun a while back and was restoring it when My friend Keith the Gun builder told me about this new barrel he engineered. This 20 ga. barrel is choked and 4" longer then the original. It has the ability to take a turkey at 65-70 yards. Keith di the medal work, as I was telling him I do wood. LOL I will finish inlaying the barrel anmd get it back to him to apply the rib.