Feels like a cool B-movie and is every inch the obscurity you would expect. But if that is your thing, then this is a fine and very watchable film.
For starters, you have a long haired Bronson as 'Wild Bill' Hickock, complete with suit, hat and large round shades off to the Dakota mountains to hunt down the White Buffalo that haunts his dreams. Also on it's trail (for personal reasons) is Crazy Horse (played by Will Sampson, memorable as The Chief in 'Cuckoo's nest).
The look of the Buffalo is like a giant stuffed toy. In one shot, as it charges towards you, you can honestly see the rails. But hey - that just adds to the strange pleasure. It's really not CGI and as time goes by, it's more and more pleasurable to revel in these more honest, handmade looks and techniques of the non computer age film-making.
There is a snowy magic to the atmosphere, almost fantasy like while still providing wholesome western adventure via stagecoaches, saloon brawls, rocky mountain shoot outs etc.
Chuck in a bit of Kim Novak and Slim Pickens, add a warm 70's score by John Barry and you have a surprisingly good, underground western treat. I loved it.