So after checking out all the info I could find online about the features of this gun, I'm 99% sure that its a snider-enfield rifle. You can read about it here in the link below this sentence. Snider-Enfield - Wikipedia, the free encyclopedia Here are some pics of this absolute beauty! Next up the breech Below are pics of the firing pin and the sights Below are pictures of all the markings I could find on the gun. There is defintly some tarnishing and a small amount of pitting, but there is no doubt in my mind that it can still fire a .577 cartridge flawlessly. However, the cartridge was made out of paper mostly and cannot be found for purchase, not for the past 100 years. The gun I originally thought was a percussion cap rifle, but I was wrong, those were made in 1858-1866 I believe and this gun was the first breech-loading of its type. So yea it has a firing pin that fires on a centerfire primer... Heh.. maybe with some research I can find out how much black powder was used in one of these cartridges and construct one of my own. Buy some primers, buy some .577 ball bearings instead of a bullet, and I bet it would work.