The Virginian - Season 9 Episode 11 -

Ritter Miley, the leader of an unschooled backwoods clan of thieves, kills a cousin who wanted to go straight. Colonel MacKenzie finds that the type of gun used in the killing was sold to only two men, Ritter and Trampas. Trampas thus tries to prove his innocence by bringing Ritter in and locating his gun, but Ritter's brothers come up with their own ideas to force his release.