I rebuilt my old Trade Gun into a Fowler. It's actually a .58 cal-24 ga. smoothbore. The old wood was junk, so I reused the barrel and lock with new wood and brass furniture. Thirty years later my inletting went from looking like I used a tomahawk to a throwing knife. Now I need to get another underway for next winter's project. I'm thinking of a .54 cal Hawken style.