Ok,I found this unfired .45 percussion pistol at a local show so I bought it yesterday for $120..Now I want to shoot it but I don't want to guess at how much charge to start with..It has a 9.5" Brl so how much Pyro FFFG should I start with? I also would like to know the MFG but The only markings on the Brl are Ardesa Spain Black Powder Only and the Ser#350165..The brl sticks out from the stock 4 5/8" if that helps..Any help would be greatly appreciated..Thanks