In was in search of flintlock rifle when my Boss came up to me with an offer to sell me his Hopkins and Allen .45 Caliber underhammer rifle. It is a .45cal rifle with a percussion ignition and a 20" barrel. Anyone know anything about these and if it's worth buying. I would be using it for Whitetail Deer hunting if I do purchase it. It would cost me $250 to buy it from him but I know nothing about it and I don't even know if it is a good hunting rifle or not. Any information or insight is much appreciated.