Other mistake: Several people, believing a treasure is hidden inside the Trails End saloon, are tearing the wooden building apart. To stop them, Joe pulls out his gun and fires a shot into the ceiling. Even though he held the gun at a 75-degree angle in front of him, the falling dust and plaster land directly on top of his head.
Continuity mistake: Jamie and a blind man are riding side by side on horseback along a trail. Upon hearing the sound of a bird, the blind man identifies it as a black-tailed magpie. Jamie looks up to see the bird. The next shot, obviously from stock footage, shows a bird sitting on a branch of a tree with no leaves. In the scenes with Jamie and the blind man, every tree is fully grown with leaves and there are no bare branches.