Never was a "Jeremiah" Johnson, made up Hollywood character loosely based on the real life mountain man
John (Liver eating) Johnson. While "Liver Eating" Johnson did posess a Hawkin rifle, he was best known for his custom matched rosewood handled Colt Walker revolver and 14" Bowie knife....he also carried a stone encased tomahawk.
Various times through his life he carried the latest in firearms, a matched pair of Remington .44 six shooters, a .45 Colt, Spencer repeater, and had various Winchester lever action rifles. Contrary to the movie, he didn't get his Hawkin rifle from the frozen body of Hatchet Jack.....he bought a new Hawken 30 caliber from a trader (Joe Robidoux) for $50, which was double the price they went for in St Louis.
The movie, (while good entertainment) doesn't hold a candle to the book and John Johnson's real life exploits. Stood 6'2" weighed 240lbs....killed approx 500-600 indians (300 of which were from the Crow tribe), and left his trademark of partially eaten Indian livers so they would know who did the killing. Was a Mountain man, Civil War veteran, and sherrif who died in 1900.
One story is that Johnson was ambushed by a group of Blackfoot warriors in the dead of winter on a foray to visit his Flathead kin, a trip that would have been over five hundred miles. The Blackfoot plan was to sell him to the Crow, his mortal enemies, for a handsome price. He was stripped to the waist, tied with leather thongs and put in a teepee with an inexperienced guard outside. Johnson managed to chew through the straps, then knocked out his young guard with one crippling jab between the eyes, took his knife and scalped him, then quickly cut off one of his legs at the hip. Allegedly using the leg as a blunt weapon, he made his escape into the woods, and survived on the Blackfoot's leg until he reached the cabin of Del Gue, his trapping partner, more dead than alive, a journey of about two hundred miles.
His real life story can be found in the book "Crow Killer". Here's a photo of Johnson with one of his Winchesters.