Cattle Raiders(1938)

Tom Reynolds returns to find he is wanted for murder, his gun having been found at the scene. Tom suspects Munro and stages a fight to get a bullet from Monro's gun which he then sees matches the murder bullet. He gets his brother Steve to confess that he Monro forced him to rob the bank with his gun. But at Tom's trial, the bullets are ignored and when Steve fails to appear, Tom is found guilty.