Will throw in a few additional comments, as this thread seems to have created a bit of interest.
The bull in question was moving down hill, and lower part of body was obscured by scrub i.e. head & neck were the only visable target, for the first two shots.
Kev had a genuine concern for his safety. No handy trees to climb.
The first shot entered near right eye (See photo) and exited just below left coronet, exit wound was about inch and half in diameter. There was, as already mentioned, massive brain damage, enough, one would think, to have a very dead animal. Hard to argue that the shot placement was not in the " So-called" right place.
Kev is a very experienced hunter and an accurate marksmen, he is not a promoter of head shots, and seldom takes them. Cool under pressure-Yes. On the very same day he shot another bull, with a very well placed broadside shot, this bull ran on for about 150 yards. I was there. We had considerable difficulty locating him in thick scrub, but he was very dead when found. Heart and a significant portion of lungs were in tatters, but the bullet did not break any leg bone, only rib.
The thread was not intended to promote headshots, I am no fan, and like others have seen the after-effect, when they go wrong. The intention was to discuss the adrenalin effect.
I would hope that no young/new hunter would take the discussion here as a green light, on headshooting.
They have a Very Limited application at close quarters and only when a hunter is Very Confident in marksmenship and rifle/bow' s placement.

Zealazny: Thank you for your honesty. I think there are plenty on this board who have taken headshots, but prefer not to enter the discussion. However I don' t think the 50/50 outcome is entirely accurate i.e. dead or miss. There' s a lot of opportunity to shoot badly on a headshot as the target area is only a very small percentage of the head area, lets see, at an estimate 3 square inches out of 100 square inchs of target.
6ptsika (Do you hunt sika?) Your facts on NZ are correct. All big game here are classified by our government as noxious, and have pest status. Isn' t that ridiculous. There are plenty of us who are actively lobbying to change this situation. However even though this is the case, and we have access to a large volume of hunting, this is not a justification to take any less care with shot placements, than your once a year New Mexico Elk hunter. I assure you that there is just as must importance placed on humane harvesting here, as there is in your country.
Jetblast: The smiley faces assist a little in clarifying what you' re trying to say. I think I know where you' re coming from, there is a certain sort of attitude from some contributers on this board. I think it is known as " Dualism" i.e. where only one point of view counts, rather than discussion.
Personally i' m glad there is some diversity in the world.
EKM. Hear..Hear.. I agree make it clear what your message is.

Anybody doing any hunting lately???