I shoot a selfbow with arrows I've made and obsidian heads I knapped. Thats pretty primative. I'm not sure one of those would be something I could be acurate with at any distance. Pluss think of the movement needed to throw one of those and how fast a deer moves...I'm thinking these were used to wound an animal and then track it until it died or got so weak they could put a killing shot on an animal. ...Remember when these where used there was no thought of how humane you killed an animal it was how hungry you were.