Overland Pacific is a 1954 Western film.
Del is engaged to Ann Dennison, whose father runs the railroad. A jealous Jessie Lorraine, his dancehall girl, loves Del as well. Del and his cohorts are secretly selling repeater rifles to Chief Dark Thunder and the Comanche Indians, who do not want the railroad crossing their land. Del and rancher Broden want the Overland Pacific to reroute through Oaktown, where they own property.A hired gun and corrupt sheriff both end up dead. Ann breaks off her engagement upon learning Dels scheme, pleasing Jessie until she discovers the true nature of Del, then is shot by him. It is left to Granger to win a shootout with Del, after which he and Ann commence a romance. ........
Source: Wikipedia