Happy Jack, I disagree with you on your comment. In CAS you can make up a missed shotgun target, but you are on the clock, and your score is the time it takes you to get through a stage. In 3 gun, you shoot the shotgun targets until they go down, also you can shoot one shot on the paper targets, and you are good if in the "A" zone, or 2 shots to make sure your target is neutralized......all on the clock.