Doctor Donovan: You know these wounds were made by buckshot don't you?
Cole: I thought they were.
Doctor Donovan: Who was using a shotgun?
Cole: A certain young man.
Mississippi: I was using a shotgun, Doc.
Doctor Donovan: You. I thought you was on there side.
Sheriff J. P. Harrah: He was.
Mississippi: I told you I was no good with a gun.
Bull Harris: Trouble is, Doc, Cole was in front of the gun. The safe place is behind Mississippi when he shoots that thing.
Cole: J.P, why don't you settle down?
Sheriff J. P. Harrah: I just can't help it Cole. I've got the shakes so bad.
Cole: You've had 'em before.
Sheriff J. P. Harrah: Yeah, well not with a hole in my leg, and a bunch of unfriendly people hanging around outside just waiting for somebody to.
Cole: What do you wanna do? Quit?
Cole: You were pretty good in there. Like old times.
Sheriff J. P. Harrah: Man, don't tell me how good I was. I just got away with it because I had an hangover. I was too mad to be scared and too sick to worry about it. You know that.
Cole: I've been there.
Bull Harris: He ain't put that stopper back in that bottle in a coon's age.
Sheriff J. P. Harrah: Didn't the last time you shot a man teach you anything at all, Joey?
Cole: Pretty wise for a kid Maudie.
Maudie: I think you must be the only person who thinks of me as a kid, Cole.
Cole: Either one of ya know a fast way to sober a man up?
Bull Harris: A bunch of howlin' indians out for hair'll do it quicker'n anything I know.
Mississippi: Want me to go with you?
Bull Harris: Yeah, if I get shot you can bring back the food.
Cole: What kept you?
Mississippi: I was talking to a girl. She said she saw.
Cole: A girl?
Mississippi: Don't you think I can know a girl?
Cole: Don't you know better than to follow a man that way?
Mississippi: Sorry... I didn't know there was another way.
Bull Harris: ...might have anyhow if I wasn't tryin' to figure out what that fella's got on his head.
Mississippi: It called a hat.
Bull Harris: Well, I'll have to take your word for it.
Cole: Next time you shoot somebody, don't go near 'em till you're... sure they're dead.
Mississippi: Are you bein' fair?
Cole: How?
Mississippi: Lettin' him go in there?
Cole: Well I'd hate to be the one to try and stop him. They laughed at him, Mississippi. That'll make the difference.
Sheriff J. P. Harrah: Joe never was much good on that piano, was he?
Bull Harris: No, and you shooting them strings out didn't help none either.
Mississippi: Well, I found out one thing.
Cole: What's that?
Mississippi: You know a girl.
Mississippi: Always make you mad, don't I?
Cole: Mostly.
Answer: Earlier in the movie, Colt and Mississippi are doing a nighttime patrol of the town, when men on horses charge at them. There is a shoot out and JP comes running to help. He gets shot in the leg.
That did not address the ankle injury. It looks badly bruised not a gun shot. Can you tell what happened?