It depends. I killed a buck up in Illinois that was trotting past my tree at a range of 10 yards. I killed him easily. Does that count? Now a deer running wide open at any distance is another story. Even one moving at a fast trot would become very dicey to me the farther he was from my tree. How far would be the cut off? Not sure. But at close range with a clear shot and not moving at warp speed, I'll kill him.