Don(Wyziwyg)T - As I understand it, the Colt Peacemaker offered little chance of hitting a man sized target at much over 15 - 20 feet. Earp's custom built Buntline specials with their long barrels would have been more accurate, but not much.

I am a poor pistol shot but using an original Army Remington (1858), at 20yards I can place 10 shots in a group which can be covered with one hand. The 'Peacemaker' was much more accurate than this and no doubt the shooter was.