So me and my friend have been taming a bunch of things with our slingshots throughout our play through but we stopped once we unlocked tranq arrows. After that we forgot about the slingshot until we ran out of tranqs when taming a level 90 tek Rex. It took 150 stones to knock it out and it is still our best Dino to this day. 🥶🥶🥶🥶🥶