If I shot all three, I would be breaking the law. Just because you have three buck tags, doesn't mean you can take all three in one day. I know here in LA. we get three buck tags, but are only allowed to take one buck per day. If the three came out on me, which by the way would never happen where I hunt, I would probably take deer # 1. If he ran off before I could get a shot, then I'd go for deer # 3.