I saw a movie once where a retired gunfigther changes his name and becomes a gunsmith; at some point a young fellow tries to learn how to be the fastest gun and searches out for him , and withou knowing who he really is starts taking lessons of shooting while working in the manufacturing of guns with him . At a point he flips and in the heat the gunsmith gives him a revolver and asks him to empty it , but the boy just fires six times, then he takes the gun and fire the last round , teaching him of "the seventh bullet is for the devil" ...
Can some one help me with this movie?