Before all of you start claiming how easy it is.. take a white 9" paper plate. Tape it to a cardboard box. Draw a little black dot in the center or one of them sticky dots. Then march that out to 40 yards and shoot off hand at that center dot. It is a lot of fun, and a real eye opener for some. Be sure and shoot five times, and see how close to the center you really are. No cheating now.
We did something like this last year only at 50 yards with a friend and his two sons. The boyshad just gotten new hawkins style rifles, and thought they were pretty hot. Believe me, that paper plate was a challenge for them off hand. Now with shooting sticks, that would be a different story.