During the final shootout, Linc is seen shooting his single-action revolver seven times without reloading. And this does not include the one shot Rance fires from the same gun to wound Linc.
In the opening scene, a wagon is swept down a heavy current with a man clinging to it. The wagon moves rapidly with the current until Charles Bronson swims up for a rescue. During the rescue, the wagon stands completely still, magically defying the still fierce current.
In the final standoff between Linc and Rance: as Rance falls forward to the ground his "mark" is clearly visible at his feet.