For reproducible results in Slingshot sport , high demands are placed on the ball ammunition. A perfect ball shape is essential, as balls with an imbalance fly their own way. In competitions, steel balls with a diameter of 8-12 mm are usually used. Larger balls have their own charm and achieve high penetration forces with correspondingly strong bands. Steel balls must not be shot at hard targets such as walls, trees, etc., as the balls bounce up and back with force. Environmentally friendly wood and clay balls are ideal for training in forests and meadows. Paintballs and powder bullets have a high fun factor and add color to Slingshot sport.