Continuity mistake: At the beginning, Hull watches as Eastwood beats up the guys in town. When Hull gets up on the wagon, his hands are fine, but in the next scene he has a bandage, I believe, on his left hand. Then the bandage is gone again and reappears soon after.
Continuity mistake: In the gunfight scene in the street between Paden and Cobb the length and angle of the shadows of both characters and the buildings change several times from one shot to the next.