The Newbie Challenge 10-20 shots per day for 28 days at the same target from the same distance using the same slingshot and ammo until you've achieved 80% accuracy. The who can Tell? Challenge : Knock an apple off your sons head with one shot. The Robin Hood Challenge. Let your friend score a bull's eye at a competition distance and then put your shot in the same entry hole The Hey Diddle Diddle Challenge: Shoot your next one over the moon. Poor Cock Robin or The Sparrow Challenge. Hit something bright red the size of a tomato with your sling and ammo. (This is referring to an English poem for children not a suggestion to shoot robins). Bill Hays Challenge Slice a standard playing card down the middle edge to edge with a sling-shot using 3/8" (9.5mm) steel ammo from over 43 yards away (39-40m). With three bearings. And a 40mph gusting wind. You may wish to practise the Hey Diddle Diddle Challenge first. Post your challenges with suitable titles.