Common shot placement options, and killing mechanisms... All these descriptions assume the animal is standing broadside. The reader should make an effort to visualise how to hit these positions from different angles. There are all sorts of instructional videos on YouTube about angled shots.
1. Traditional heart shot
Point of aim: Half-way below the midline and the bottom of the brisket, along the rear line of the foreleg.
Killing mechanism: Blood loss only.
Animal will likely run on, and depending on the extent of heart destruction, this can be well over 100 yds. Hard bullets that pierce the heart but do not cause a wide wound channel can result in a deer running on for several hundred yards, e.g. low velocity copper bullets and bonded bullets that pass through the animal with minimal shock.
2. Hilar shot
Point of aim: one third of the way below the midline and bottom of the brisket, in line with the upper humerus joint with the scapula. Slightly higher than the traditional heart shot. NEVER above the midline of the torso. In line with the front of the foreleg. On a large animal, e.g. heavy red stag, the shooter must visualise where the leg bone / shoulder blade joint is, and place the bullet ~2-3” behind this position.
Killing mechanism: rapid blood loss, CNS disruption.
The blood loss from a hilar shot is significantly faster than a traditional heart shot. The hilar – from “hilum” – is the junction of the pulmonary arteries and the lungs. This is immediately adjacent to the aorta, the largest artery in the body and the main blood supply between the heart, brain, organs and locomotion. In addition, intertwined with the aorta, and feeding into the lungs and down to the heart, is one of the critical autonomic plexuses. The autonomic nervous system is:
“a control system that acts largely unconsciously and regulates bodily functions, such as the heart rate, digestion, respiratory rate, pupillary response, urination, and sexual arousal. This system is the primary mechanism in control of the fight-or-flight response.”
Smash the hilar zone with a fast expanding, fragmenting bullet, and all of the key functions for survival are destroyed in an instant:
1. blood supply to and from the lungs to the heart, and from the heart to the brain and locomotion
2. brain control over all internal organ function and the ability to run away.
3. High shoulder shot
Point of aim: halfway between the midline of the animal and the crest of the spine, in line with the foreleg, right in the middle of the shoulder.
Killing mechanism: paralysis, blood loss.
The high shoulder shot is the “safest” way to anchor an animal on the spot when shooting either quickly, or from a distance. The bullet passes through the scapula, into the spine below the ~T2-T4 vertebrae, with damage to the upper lungs. This is the shot I use for longer range 300-600m shooting. The animal will be instantly dropped, and the steep downward trajectory of the expanded, fragmenting bullet will pass through the offside lung and create fatal bleeding.
When used at closer range, the high shoulder shot can often result in a paralysed animal that requires finishing off. This is because the amount of upper lung damage can be quite minimal with a flat trajectory. In these circumstances it can be quite a slow killing shot. At close range, I far prefer the hilar shot.
The high shoulder shot has the added disadvantage of potentially wasting a lot of the forequarter meat, depending on type of bullet and impact velocity.
A risk with the high shoulder is red stags with a thick winter coat can have a misleading depth of hair along the crest of the spine, resulting in a point of aim that's a shade too high. In this instance, it's almost guaranteed the animal will need a finisher.
In my experience guiding others, by far the most common mistake is placing the bullet too far back, along the midline, essentially aiming for the middle of the animal. This is often an instinctive response by newbie shooters. Even after a pre-stalk lecture on shot placement options, and lots of coaching in the prep immediately before the shot is taken, I've watched guys with powerful rifles screw it up by aiming for the centre of mass. This can be extremely aggravating! As per the comments above, it's really, really important for the junior stalker to be coached on all the options, and how to pick the right one for the circumstances, and critically how the point of aim changes with the animal's presentation to the shooter.
I know that in the UK, there are several well known guides that say a quartering shot is not recommended. I think that's nonsense, but am happy to suggest that for newbies, it's probably best to stick to full broadside. I think it's also really important for the junior stalker to get right in amongst the gralloch to inspect what their bullet has achieved, and how it killed the animal.
I'm amazed at how many squeamish deerstalkers I've met who won't do this...