Finally came up on imdb movie gun section:
Rem 1858 New Army, Buck Taylor. Colt 1860 Army, Daniel Craig, early cartridge conversion with loading lever still attached. Colt SAA Cavalry model, nickel, ivory grips, Harrison Ford 7 ½”. Colt 1878 double barrel shotgun 12 gage. Winchester 1866 yellow boy, possibly 44 rf saddle ring carbine, doesn’t say what caliber the movie gun was. Spencer 1860 carbine, caliber unknown. S&W Schofield Model 3, .45 Schofield.
Pretty good movie, actually.