Cap & Ball .44. I shot it once back in the 70's when I bought it. The cleanup afterward changed my mind about further marksmanship with it. That, and shooting it after forgetting to grease over the balls in the front of the cylinder. It chain fired on me and sent one down the bore, and two out the sides.
Never, Never, Ever fire one of those black powder revolving carbines with your hand on the forearm. If the same thing happens, (and it is quite common), you'll lose several fingers, or your whole hand in the process. Bill T.