Winchester '73 was the film that moved Mann from the b-movies to the big league, rescuing James Stewart's floundering post-war career in the process by casting him as a conflicted hero (although since he inherited the project from Fritz Lang, maybe Lang deserves the credit for that). Both men would go to much darker places - Mann with the remarkably bleak Devil's Doorway, which remained shelved by MGM until the success of Broken Arrow convinced them to release it  but a movie about a man hunting down his own brother as the rifle of the title is handed from person to person along the trail before it ends up in one of the director's beloved mountainside shootouts is still stronger meat than you'd expect from the studio system. Great dialogue, an impressive supporting cast  Dan Duryea, Will Geer, Millard Mitchell, Stephen McNally, Shelley Winters, Charles Drake, Tim McIntire, Jay C. Flippen, Tony Curtis, Rock Hudson among them  and Mann's outstanding visual sense raise the bar with this one.