The Legacy of Charlie O'Rourke - S1-E15
Factual error: When Alice, Heyes and Curry dig up the gold bars, they realistically have to use both hands to lift each one. But Heyes then fills two cloth bags with six bars each, hefts the sacks easily and slings them over his saddle. Conservatively, each of those bags would weigh 180 lbs. - he's just tossed the equivalent weight of two full-grown men over his shoulder onto the horse.
The Day They Hanged Kid Curry (90 min.) - S2-E1
Continuity mistake: In full shot, Curry is leaning against the courtroom wall to the right of the door. When the shot cuts to a close-up, though, he's on the left side of the door. (00:06:00)
The Day They Hanged Kid Curry (90 min.) - S2-E1
Factual error: Wheat refers to the hanging of real-life outlaw Black Jack Ketchum. But Ketchum was executed in 1901. Smith & Jones is set in the 1880s. (00:27:50)
How to Rob a Bank in One Hard Lesson - S2-E2
Continuity mistake: Harry sets the can of red putty down on the desk in front of Heyes. When he first places it, the label is facing the camera. When the shot cuts to a wider angle, the label has rotated itself 90 degrees and is now facing Heyes. (00:19:40)
How to Rob a Bank in One Hard Lesson - S2-E2
Continuity mistake: When Harry tosses the cloth bag toward the well, it lands on bare ground with a few strands of straw nearby. But in long shot, it's surrounded by heaps of straw. (00:43:30)
How to Rob a Bank in One Hard Lesson - S2-E2
Continuity mistake: In the sheriff's office at the end, Heyes and Curry instantly switch positions between takes. (00:45:40)
How to Rob a Bank in One Hard Lesson - S2-E2
Plot hole: Heyes convinces the deputy that they're not Heyes and Curry and rightfully pins the bank robbery on Harry, who forced him to break into the safe. But it had been previously stressed that only Heyes could have cracked that particular safe, something the governor knew. So the neatly tied-up ending doesn't really work. The governor would still know that Heyes (whose nitroglycerin method was based on a real bank robbery of the era) opened the safe.
Jailbreak at Junction City - S2-E3
Revealing mistake: The outlaws all have their hands tied behind their backs. But the one wearing glasses, apparently unaware that he's in the shot, brings both hands up to push the slipping glasses back up on his nose, then quickly puts his hands behind his back again.
Audio problem: Just before Curry shoots the rattlesnake, Heyes says, "Don't anybody move." But his lips don't move when he says this. (00:11:20)
Factual error: Heyes and Curry spend months at the mine without any razors or knives. Their beards grow out - but their hair doesn't get any longer. (00:12:00)
The Posse That Wouldn't Quit - S2-E5
Continuity mistake: When Heyes and Curry stop Belle's wagon, Heyes is holding his hat in his right hand. When the shot changes angles, the hat jumps instantly into his left hand. (00:05:40)
The Posse That Wouldn't Quit - S2-E5
Revealing mistake: All the shots of the pursuing posse are "borrowed" footage, which might never have been obvious - except for the fact that one shot shows us a recognizable Heath and Nick Barkley from "The Big Valley" at the head of the pack. (00:17:00)
The Posse That Wouldn't Quit - S2-E5
Factual error: Heyes gives Bridget a glowing and accurate description of Denver's Brown Palace Hotel - a landmark that wasn't built until 1892, ten years after the setting here.
Something to Get Hung About - S2-E6
Revealing mistake: When Heyes rides away from the hotel in the beginning, he's passed on the street by a tall man in a white shirt riding a black horse and slouching in the saddle. When the shot cuts back to the front of the hotel, the same extra on the same horse rides by again, going in the opposite direction. (00:02:20)
Something to Get Hung About - S2-E6
Visible crew/equipment: After the street brawl, Heyes, Curry and Stokely walk away arm-in-arm and pass a man in a 20th Century short-sleeved blue shirt with a very 20th Century haircut, leaning on a piece of equipment to the right of the screen - apparently one of the film crew.
Something to Get Hung About - S2-E6
Continuity mistake: After getting filthy in a street fight, Curry goes into the hotel and is immediately clean again.
Six Strangers at Apache Springs - S2-E7
Continuity mistake: During the dinner, Grace is in two places at once in the background. She's at the far right end of the bar drying a glass when the camera is on Mr. Fielding. When the camera reverses angles to show Mrs. Fielding, Grace has instantly jumped to a spot at the far left end of the bar, and is still drying the same glass. (00:12:15)
Six Strangers at Apache Springs - S2-E7
Revealing mistake: During the saloon brawl, recycled footage causes Curry to change into his first season hat for a few shots. After the fight, he has his second season hat back on. (00:28:00)
Six Strangers at Apache Springs - S2-E7
Continuity mistake: Heyes' horse is shot out from under him by the Chiracahua, forcing him to leave it behind and ride double with Curry. But when they return to Apache Springs, Heyes is again riding the same horse that was shot earlier. (00:40:40 - 00:43:30)
Six Strangers at Apache Springs - S2-E7
Continuity mistake: In memory of their friend Seth, who died in "Smiler with a Gun," Curry grew a mustache that he kept for several months. (As a running joke, Heyes kept prodding him to get rid of it and Curry kept refusing.) Because production and air dates differed, the mustache is, without explanation, missing here. It's back in the next episode, gone again in the next, and reappears for the last time in the next, where Curry finally shaves it off.