Continuity mistake: When John confronts Joe about firing Jelks, Joe's hands change positions, from down at his sides to up at chest level adjusting his gloves, every time the camera angle changes. (00:22:50)
The Guns of Johnny Rondo - S3-E18
Visible crew/equipment: When Rondo and his son Dan ride through High Chaparral's gate, there are tire tread marks visible in the dirt.
Continuity mistake: While he's "dining" with Miguel and the banditos, Don Sebastian's position on the ground changes repeatedly as the camera angles shift. In most shots, he's reclining and leaning on one elbow. But in several others, he's sitting upright. (00:24:35)
Revealing mistake: When John runs out of the Simmons' house, a jet contrail is faintly visible in the sky at the far right of the screen.
Continuity mistake: A heavy black bag falls from the Simmons' wagon as they pull away from their house. A short time later, it has disappeared from the spot where it landed.
Revealing mistake: After Buck knocks Bates out, Victoria takes the outlaw's clothes as a disguise in order to escape. Miraculously, Bates' clothes, despite his being a foot taller and considerably heavier than Victoria, fit her perfectly. She doesn't even have to roll up the shirt sleeves or the trouser legs.
Revealing mistake: When Buck comes across the first of two bodies in the desert, we see only the dead man's booted legs protruding from the bushes. When he finds the second body, the exact same shot of legs and boots (with the same bushes and rocks) is used over again with the film reversed.
Factual error: The Apache spearhead Buck appropriates is very obviously made from machine-tooled steel. Indian tribes in 1870s Arizona made their weapons points from hand-knapped stone and on rare occasions, iron. They never developed steel-making technology.
Generation - S3-E25
Revealing mistake: Due to budget cuts in the 3rd season, an L.A. soundstage replica of the ranch house replaced the outdoor set, which was in Old Tuscon. The replacement was often painfully obvious. In this episode, a stock exterior shot of the real house, with its outside walls undecorated, contrasts with the mock-up, which has mounted cattle horns all over it.
Plot hole: Victoria asks her rescuers to take her to Rancho Velásquez. When they ask where it is, she says, "About 30 miles from here." Though she never indicates a direction, they reply, "Sorry, we're not going that way." (00:23:20)