Black powder is a blast. I have a single shot, muzzle loading cap-lock pistol. While I don't get a lot of shots off, it the fun makes up for it. With the double set trigger, it can be scary until you get used to it. Once set, you need only barely touch the firing trigger to set it off. Using patch and ball, it can outshoot my modern (and accurate) .38 target revolver.
k_enn