Mine is a Pedersoli kit I bought from Navy Arms in the early 90's. Dixie Gun Works probably has it, too.
Dixie Gun Works muzzleloading, blackpowder and rare antique gun supplies.
Assembly is easy. I lightly sanded the beautiful walnut stock and applied tung oil in several hand rubbed coats.
Woodworker.com: 100% Pure Tung Oil For Fine Finishes, Pure Tung Oil
According to Lyman's Black Powder Handbook, it handles 150gr FG behind a .735 patched ball, but I rather enjoy 120 gr. The colonists would place a ball in the hand and just cover it with powder for their charge, about 60-70grs. Also, a 10ga wad for steel shot just slips down the bore, if you want to send a couple oz of whatever into the air. It's a hoot to shoot.