ORIGINAL: FG
you got a hell of a deal! .1:48 with the 50cal and 1:66 with the .54cal
for the 54 try 70gr pyrodex RS or Black powder, .015 patch and a .530 round ball.
Contact CVA with the question about converting it over to flintlock. You can get the CVA lock on ebay or gunbroker for around $30 and if it doesnt spark i can hook you up with a guy that rehardens frizzens for $20. He does a damn good job too.
Yea, I saw one on ebay for $33, from Pat's sporting goods up in Michigan. I also did a search on CVA flintlock replacement lock and found a siler kit for $74, says you have to drill out the holes with a drill press, pre-spotted holes. I don't have a press, but I think I can find a friend that does. I have some .015 patches and they guy gave me whole box of .530 and .535 round balls. I was on the CVA web site, but will send their customer support an email.
Chap