For heart and double lung shots, my answer is a little faster because like said, less overall blood volume. My answer on marginal shots like liver and gut shots is a most definitive YES. The younger/smaller the deer, the more quickly the effects of a liver and/or gut shot take effect on that deer (enough for death or for a follow up shot to be possible). I can think of 3 mature bucks that I have been involved with that were all straight liver shots (confirmed after the fact) and still alive when found 8-14 hours later. I also can think of two mature bucks involved with that were gut shot and went.5-.75 mile after hit. Younger deer don't live that long with a hole in their liver, nor do they go very far at all when gut shot and in fact most times you see them lay down.