In the initial overhead shot of the stagecoach Silence is riding in (before he meets Sheriff Burnett), two horses are attached to the back of the stage instead of one.
The amount of snow shown to be falling in several of the town scenes varies inconsistently.
In one shot of Silence and Pauline's love scene, Silence's head is immediately under Pauline's arm. However, in the connecting shot, her arm is covering his forehead.
On the map in the governor's office, the state of Nevada is identified as Utah.
When Silence and Burnett use potatoes as target practice, the potatoes they fire at frequently hurtle towards them. The impact of the bullets should have sent them farther away.
In the beginning, the Sheriff's rifle is frozen and doesn't work. But somehow, Tigrero's rifle works when he shoots the Sheriff, even though it had been buried in the snow for some time. Snow does work as insulator, but items left in snow will eventually reach ambient temperature and freeze.
When Sheriff Burnett inquires Silence about his C96, he refers to it as a "mechanical gun" (English version)/"machine gun" (Italian version). Although rapid-fire models of the C96 and its imitation models would eventually be made, none of them existed in 1898. Silence's model is a historically accurate semi-automatic model.
When Silence shoots up Loco's gang in the Snow Hill saloon, he is heard firing 13 shots. A C96 can only fire 10 shots before it needs to be reloaded.
When Silence rides through a grove during the very beginning of the opening credits, some skiers can briefly be seen in the distance.
When Loco drags an outlaw through the snow with a whip, a rope attaching the whip to Loco's saddle is clearly visible.
There is some variance in the quality of film stock throughout the film.
At the bar, when Loco punches Silence, his hat flies off his head. But When Silence is on the floor his hat is back on his head.
A skiing pole can be seen partially buried in the snow on the left-hand side of the stagecoach when Silence is traveling to meet Pauline (just before he meets Sheriff Burnett for the first time).
What appears to be a small communications tower can be seen on top of the mountain in front of the cemetery where Pauline and the other women bury James Middleton.
After Silence shoots the gang of bounty killers at the beginning of the film, the eyelids of one of the dead killers briefly twitch.