I believe there is a scene in a movie from 1956 called "The Last Hunt", where the two main characters are reloading their buffalo cartridges around a campfire. I'll have to dig that out of my collection, and review to get back forgotten details.
Stewart Granger and Robert Taylor play the buffalo hunters. 1883 South Dakota is the setting.
Tiny spoiler: The very last scene in that movie is a bit like the last scene in "The Shining". :O