Continuity mistake: Late in the movie, Billy is captured and jailed in an upstairs room with Bell to guard him. A knock sounds at the door and Bill raises his rifle (cocked) and points it at the door. The door is opened revealing a lady. Bell, still aiming the rifle (now suddenly uncocked), quickly lowers it.
John Simpson Chisum: Bonney you are a fool! You call yourself the scourge of New Mexico but by God, I am New Mexico, and you are dead.
William H. Bonney: Chuckles... let me tell you something Mr. New Mexico. I wouldn't give a bucket of piss for your future .
Charles Phalen: William H. Bonney, heh? Billy the Kid was shot and killed by Pat Garrett. Everybody knows that, it's common knowledge.
William H. Bonney (the Old): There are other lawyers around, you piece of chicken shit. Get back in the vehicle and drive before I make it 22 just for the goddamn hell of it.