4070 rubber band and 3060 wear which violence?

4070 rubber band. The advantage of wearing a rubber band inside is that it can improve the initial penetration. This is a cocktail. The principle is that the center of gravity of the rubber band moves to the side close to the slingshot because the front is thick and the back is thin. After the rubber band is full, the moving distance of the center of gravity decreases, and the time for the center of gravity to rebound to its original position in the same time is reduced on the premise that the resilience of the rubber band remains unchanged. Therefore, the 4070 rubber band is more violent than the 3060 rubber band.