Shoot twice?

[JC]

Curt, yep.  :D

[Curtiss Cardinal]

On further reflection and consideration of what others have said,and playing devil's advocate. Even if the second shot caused the deer to run the two arrows through the vitals should make that a short burst of speed. I think a sprint helps the cause of hemmorhage and especially double pneumo-thorax lethality.

[Horne Shooter]

I shot a caribou a couple of years ago and had made (what I thought) was a pretty good shot.  He went only about 20 yards and laid down.  He was now about 35 yards and I stayed put to see his next move.  After about 5 minutes he got up and bailed over a bank towards a lake.  I ran up and put a second one in him.  He dropped on the spot.  If he had been closer, I would have shot again sooner but (due to the distance) I figured the waiting game would suit me better than a possible miss (that would probably get him up and moving again).....I don't think this answers anyones question but I like telling the story!