those guys did NO practicing, man, and didnt have a clue how to use the gun effectively. Almost nobody did, back then. Bat Masterson and a few others knew to get a trigger job and get the sights zeroed, and that's it. Hell, it took them hundreds of years to figure out that they really ought to use both hands on a pistol, unless they were riding a horse at the time of firing. When ever Elmer Keith was teaching the 2 handed hold, and writing about it, in the 1930's or so, it was HEAVILY resisted for any sort of fast work. It took Jack Weaver's wins of Cooper's early combat shooting matches, using his isometric 2 handed hold, and Jeff's ceaseless preaching about it in the pages of Guns of Guns and Ammo mag to get the message across, and that didn't really "take" until the late 1970's.