In 1966's Billy the Kid vs. Dracula, Dracula (John Carradine) attempts to transforms Billy the Kid's fiancee into his wampyr bride. Things look bleak when the sheriff runs outs of bullets, but the resourceful outlaw has one last trick left...
Yup, Billy beans the Count upside the head with his empty gun. If there was scene in which Billy explains that his six-shooter was constructed of some silver-garlic fiber composite, it was lost to the cutting room floor. Incidentally, this film was a double feature with Jesse James Meets Frankenstein's Daughter, which was nowhere as absurd.