Sheriff Wyatt Earp probably would have liked it also. He couldn't have had a much better record since he never lost a gunfight. Although, The 10 mm probably would have saved him a few shots and ammo. Another superb gunfighter who would have loved it was Col. Jack Hays, Texas Ranger. He never lost a gunfight either and died a natural death. He was previously discussed on this forum in the past. The only problem is that their single action army Colts probably couldn't have withstood the 10mm ammo pressures over an extended period.