Can this shoot regular loads or is it a Black powder gun?? Only name and address on side of barrel (two Lines) serial number under hand grips (Had to remove them to see it) 2 1/2 inch barrel. Also I figured it out to be year made aprox 1890 to 1941 On top of gun says Safety Hammer double action. Serial number is 8864. Any info helpful....Mostly what ammo can I use safely?? On the hammer part it says Pat april 1887 Thanks in advance.