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.
The Hateful Eight (2015)
1 character mistake
Directed by: Quentin Tarantino
Starring: Samuel L. Jackson, Kurt Russell, Tim Roth, Channing Tatum, Jennifer Jason Leigh
Genres: Western
Factual error: The bed in the "Haberdashery" has a box spring under the mattress. Referring to a "History of Bedding": "By 1927...box springs with ticking covers were still new." Having one in this time and remote location would have been impossible.
Major Marquis Warren: Move a little strange, you're gonna get a bullet. Not a warning, not a question...a bullet.
Trivia: The guitar that Domergue plays and that was subsequently destroyed by Ruth was a priceless antique from the 1870's on loan from the Martin Guitar Museum. Six replicas were made for the film, however Kurt Russell was misinformed and destroyed the original. Due to this the Martin Guitar Museum said they would never lend an instrument to film shoots ever again. (01:38:00 - 01:42:30)





Answer: It's not PURELY fictional, as plenty of poisons lead to vomiting and bleeding (cyanide, arsenic, etc.), but Tarantino, as is his wont, definitely takes some artistic license and kicks it up several notches for dramatic/gross-out effect.