Stats:
Rice barrel, 54 cal, 1-66 twist, 31 & 5/8 inches long, tappers from one inch at the breech to 7/8 inch at the muzzle.
Davis lock and set triggers.
A plank of sugar maple.
It all weighs 8 pounds and balances perfectly between my hands.
My builder (who wants to remain anonymous) did an outstanding job. He also made a cleaning jag and scraper to fit the patent breach. And he came in under budget!