Rio Lobo (1970)

Factual error: So the Civil War ends, and the colonel heads for Texas. It must have taken close to a decade to arrive there, for when he rides into Blackthorne, Texas, he's packing a Model 1873 Colt, and a Model 1873 Winchester.

Factual error: As the colonel and his companions ride out of Blackthorne, Texas, they pass Saguaro cacti, which, oddly enough, only grow in the Sonora Desert, a far distance from Texas.

Continuity mistake: When the bad guy winds up to throw the dynamite into the cantina, McNally puts a round through his brisket, and he falls to the ground clutching his belly. He weakly tosses the dynamite, then stumbles back behind the adobe, now clutching his right shoulder.

Dr. Jones: Mr, UH?
Cord McNally: Doesn't matter.
Dr. Jones: Well, Mr Doesn't matter we ought to give them one last good yell, they usually yell a lot when I give them a shot of this.
Cord McNally: YOW! That's the real stuff.
Dr. Jones: Well, if you had been a good enough actor I wouldn't have used it.
Cord McNally: Cord McNally.

Amelita: Turn around Sherriff, I want you to see who's gonna kill you.

Cord McNally: Do you think you could sneak up on the fella at the gate?
Phillips: I could sneak up on a coyote if I've a mind to.
Cord McNally: Did you get that fella at the gate?
Phillips: He's at another gate now, lookin' fer Saint Peter.