Because what Lucky McDaniel was teaching his students was actually carefully controlled snap-shooting, it became just as easy for the student to hit moving targets as still targets. If McDaniel had the time and the interest, he could easily teach a hip-shooter to hit just under a beer can to start it rolling, and then continue to hit it while in motion until his gun was empty; or McDaniel could teach the student to shoot and hit a can thrown up in the air five or six times with a pistol.