Caught part of Dances with Wolves last night, and saw something I'd never seen before...
Generally it's a well-done movie firearms wise.
The protagonist, Lt. Dunbar, has what appears to be a Model 1860 Henry rifle with him at his outpost.
In a scene that shows him fortifying the place for an expected Sioux attack, it shows the Henry laying across a wooden box with a handful of extra cartridges next to it.
They're centerfire rifle rounds, and look VERY much like .45-70s.
Which didn't enter service until 1873. And wasn't even conceived of until after the Civil War.
I've seen that scene a half dozen times, but this is the first time that ever jumped out at me.
