Mike, I've had my eyes peeled for a nice single bbl 10/12bore at a decent price for a good while,would like to try it with round ball as is, or sleeve on a rifled bbl.A Greener GP might work too.Descent singles seem pretty hard to find.
Did you put a rifled bbl on that Jeffery?
The way they change from the flat sides to round just ahead of the chamber seems like it would work great for hiding the sleeve joint...how do it shoot?
cheers
frank