Damascus, I can understand using traditional cartridge design similar to the ones used at the time the gun was built. However, would it not make sense to try modern plastic wads or maybe you have already done that. I have not tried comparing the results but according to the reading of various threads on this board the plastic wads will give you the equivalent of a tighter choke. If this worked, it might make the gun more versatile, maybe for longer shots.

So many guns, so little time!