Eighty-three minutes into the film, a bullet hole suddenly appears on a steel cable car right behind Charlie as she ducks bullets with Grant. Charlie looks behind her, apparently reacting to the sound of the bullet hitting the car - but there is no sound whatsoever.
When the gang returns to their hideout after robbing the train, Latigo holds up the bottle of whiskey he took from the train. The card players all come to the bar for a glass. When the bottle is carried to the table it is still full.