The Revenant is as close to experiencing the western frontier in the 1820s as you are going to get. Nothing - at least to my knowledge - is askew historically. I think the character Hugh Glass gets back on his feet a little quicker than most would after being mauled (twice) by a huge grizzly, but that was the only "Hollywood" I took from the film. I'm not easy to please when it comes to historically based films, but I was super impressed. The movie's cadence bogs down a bit at times but the opening is gripping in the same way as "Saving Private Ryan." I will see it on the big screen again and it will become part of my DVD collection. As I said, just go see it.