Bill Munny: You better bury Ned right, and don't go cuttin' up... Nor otherwise harm no whores, or I'll come back and kill every one of you sons-a-bitches.
In the final shoot-out scene where Clint Eastwood kills 5 men in rapid succession, Clint crouches and exchanges gunfire with two deputies who are standing side-by-side. A blood stain suddenly appears on the abdomen of the younger deputy on the left, but there is no bullet hole, it does not coincide with any gunshot sound effect, and the deputy does not react to the wound. A moment later, as Clint continues firing, both deputies topple over backwards.
The movie is supposedly set in early summer (July 4th and thereabout) yet autumn leaves, and at one time a morning snowfall, are seen throughout the film. The movie was actually filmed in southern Alberta during September and October.