Interesting comment Daryl - I wonder if a cervical spine break actually stops the adrenal gland from being stimulated?? Makes sense to me - being they are located on the kidney eh?? As you know some of those shots still result in an animal that is struggling ineffectively on the ground - it doesnt typically mean lights-out. But maybe it does result in better meat than a chest shot?? I do not know...

That said - another question that begs to be answered is - if a chest-shot (but previously undisturbed) animal lives for say 1 minute after the shot - is that enough time for adrenaline to be distributed around the body?? I did a bit of animal physiology at Uni but I cant remember that lecture and in any case I failed that course.... perhaps a 'medical professional' member hereabouts will have a better idea of the answers??