I have owned and fired live ammo from a Smith, Gallagher, and Sharps as well as the brass rim fire cartridge Spencer. One can obtain brass cartridges for the first three and load them which makes it easier to shoot them. Extraction for the Smith and Gallagher with these modern cartridges are probably easier than the gutta percha and foil cartridges of the war. For the Sharps, one has to tip the carbine up and the brass cartridge falls out. As such they are fun to shoot but I have discovered that they are not as accurate as long guns nor do they have the penetrating power of the .58 Minie. The Sharps, and the Spencer have a greater powder load than the Smith and the Gallagher and a larger slug as well and can penetrate, at least at my gun range, more wood. One thing I have wondered about is how much stopping power the Smith and the Gallagher had, and the Henry as well, as on paper, their light loads don't look impressive on the charts. Anyone know of any anecdotal comments from soldiers from back then about these weapons being reliable at anything beyond, say, a hundred yards?