Interesting story. Evidently based on true facts, but having difficulty finding an historical account. One comment relating to the shooting abilities of Billy though: No one ever made a 500 two shot 2" group at 500 yards let alone a three shot 3" group at 1000 yards with a No. 1 Mk III Enfield rifle. That rifle is simply incapable. I seriously doubt if a three shot 3" group at 1000 yards has ever been made with ANY rifle. A thee shot 5" group with that rifle at 200 yards with the battle sights would be considered extremely good and not the norm. The feats in cinema for marksmanship are frequently portrayed with little resemblance to reality. Still, enjoyed the movie and give it three stars.