So Mercy, Roadhog and McCree walk into a saloon. And Roadhog is between both of them, and McCree goes all high-noon on them, but shoots without charging enough to one-shot roadhog.
Does McCree lock onto both? If so, when he shoots, and the first shot doesnt kill Roadhog, does Roadhog also get hit by the second? If not, what if Mercy just walked right behind Roadhog at the last second (after McCree starts firing but before its her turn to die, which I've seen happen with heros going behind walls just at the last second)?