Continuity mistake: It goes from a team of six to a team of four horses when showing the morning that Jodi and the gang arrive. Dispute her being "6 horse Judy".
Suggested correction: Watching now, and anytime you can count the horses, it remains at six horses throughout. Maybe some of the close-up shots were not able to fit all six horses into the frame, but there are definitely no shots showing that the wagon has four horses only.
Other mistake: In the beginning of the film when the stage coach is approaching Minnie's haberdashery, a well-worn horse path when approaching the haberdashery but it's been snowing a long time, and there is not a lot of traffic going to the haberdashery so this path should not be so worn.
Character mistake: John Ruth never mentioned to anyone in Minnie's Haberdashery about a letter from Abraham Lincoln! So how could Oswaldo ask Chris Mannix about it? Oswaldo just couldn't have known.