Continuity: Near the beginning of the movie, when Uncle Ben is seen twice with his buckboard, his name is painted on the seat back as "McCandles". The end credits spell it "McCanles".
Anachronisms: The scene in the swamp where the inmates are hauling logs out of the water shows Max on a welded steel barge. Welded steel barges weren't constructed until the advent of electric arc welding in the 1930s, and didn't appear in general use until World War II. The barge should have been a wood-hulled barge instead of welded steel.
Crew or equipment visible: The camera's shadow can be seen as it pans across several head of cattle being driven in the scene immediately following the parting of ways between Max and Jonas.
Anachronisms: When the cowboys are herding cattle at the ranch/rail yard, there are several modern box cars in the background. They are of steel construction with modern US Department of Transportation identification codes that did not exist during the era depicted by this film.
Continuity: After waking up on the pool table, Smith is standing at the bar with his gun belt on his shoulder. In next shot he has it strapped on.
Continuity: After waking up on the pool table Smith orders a drink at the bar. When the bartender pours the drink Smith puts his hand on the glass. In next shot Smith reaches to pick up the glass.
Continuity: When Keith is teaching McQueen poker and McQueen pulls the gun on him, Keith's gun vanishes from his right hand between shots and the whiskey bottle changes from his left hand to his right.
Revealing mistakes: When Max Sand (pretending to be Tom Fitch) gets busted out of prison by Fitch's buddies, he climbs out of the busted jail window with his gunbelt on. If he was in a jail cell, he wouldn't have had his gunbelt with him.
Continuity: After Bowdrie's whipping at the prison camp, Max runs into the water to save Bowdrie from drowning. Max turns Bowdrie onto his back so Bowdrie's face is up, out of the water; in the next shot, which is just a second later, Max pulls a face-down Bowdrie out of the water by the feet.
Errors in geography: Nevada Smith is working cattle at the railhead in Abilene KS. and during that scene, snow capped mountains are visible in the background. There are no mountains in Kansas.