I have been reading here https://www.theslingshotforum.com/posts/184990/ but the thread is like 5 years old now in the latest video of joerg he is shooting darts... the way joerg shoots his steel balls is already very dangerous. At least seems. But when he shoots a dart and actually puts his head behind the scope, that dart can kill him. Stick in his front head. so: RTS or backfiring of slingshots seems to be a common thing. the one with the melon you have already seen I am sure so: why does it happen? how can you avoid back firing / RTS?