Its happened to me twice. Neither time was intentional. One one the bullet went thruogh the head of one and deflected about thirty yards up the slope and hit another through the chest. The other time there were two lined up perfectly. At the shot they both went down. I had no idea the second deer was even there. Both times I was lucky enough to have several tags left. Once was with a 308 and the other a 6.5x55.