An important principle: Forget about what it sounded like to shoot an arrow from your machine bow. I have noticed that new shooters want the arrow to go as fast as the wheels send them. I am convinced the sound is more responsible for this than watching the flight of the arrow. The way the "release to target" sounds is burned into their mind. When this happens they tend to over compensate by drawing further or faster than they should. Or they draw just plain wrong-- they simply try too hard. This throws them all off. Get used to the sweet sound traditional archery.