Only if you can make the shot. Practice first on bunnies when you are 8, by the time you are 13 you can hit a runner. Keep it in close, and know your animals, you will be fine. People shoot running hogs all the time, what makes deer so special? I am not a deer worshiper, and animals dont have rights. A standing deer has a better chance of ducking an arrow than a deer running 10 yards away.