BryceM
AH enthusiast
- Joined
- Aug 5, 2009
- Messages
- 418
- Reaction score
- 1,021
- Media
- 19
- Member of
- NRA, RMEF
- Hunted
- USA, Namibia
There's a popular idea that gets floated around from time to time here and on other hunting Internet sites. The basic idea is that for deer or antelope, there is a space below the spine and above the vitals where an animal can be shot without causing significant damage. I've wandered around enough animal carcasses to know that no such space exists! I'm not a thoracic trauma surgeon or neurosurgeon, but I am a surgeon and have spent many fine hours working on the spine. I know a thing or two about terminal ballistics and what brings about the demise of an animal.
There are a few problems with the "no man's land" theory. First, much of the time these animals aren't recovered, and the assumption is that the bullet somehow went into this zone without killing the animal. If the animal isn't recovered you don't actually know where the bullet went. In reality, many of these injuries are too high - above the critical part of the spine. The vertebral bodies and spinal cord are much lower down in the animal than most people appreciate. Shoot just an inch above the spinal cord in the fleshy part between the spinous processes and not much happens. Some running, and a bit of bleeding maybe, but that animal will go a very long way.
The aorta and vena cava (huge blood pipes) run along and just below the spine through the chest region - right through the middle of the described "no man's land." Hit one of those, and it's over very quickly.
Many "shot placement guides" have the anatomy all wrong. In reality, the spine is very low. Look at these random pics I stole from the Internet:
These cartoons are WRONG, WRONG, WRONG. Sometimes they appear in state-published hunting regulation manuals and in hunters education material. Compare these to an actual carcass. Pay attention to the white stripe that runs above the vertebral bodies. That's the actual spinal cord - neurologic tissue. Hit it or the vertebral bodies, and the animal will be anchored immediately. Hit the spinous processes (bony spikes protruding upwards) and that animal will probably never be recovered. Penetrate the pleura of both lungs, even a little, and it's unlikely that animal will go very far. Such an injury will almost always produce significant bleeding and/or a pneumothorax (collapsed lung). Usually this animal will expire within a few hundred yards.
In the cartoon drawings, the spine is shown running just under the skin. From the split carcass, around the shoulder, you can easily see that the spine dips down 6 or 8 inches from the top, and that's ignoring an inch or two of skin and hair above that. At the shoulder, the half-way point between the top and bottom of the animal is just barely below the vertebral bodies. There are a ton of ways to miss above the spine in this region! In the neck region, the spinal cord is in the bottom half. If you've ever removed the backstrap muscles, you have already witnessed this, possibly without taking note of it.
Now, consider a bison:
I noticed this while butchering a yearling heifer this year. In the region of the "hump" the spinous processes can be over a foot long. It's truly impressive. The actual chest cavity is WAY lower than you might expect. Other humped animals like gemsbok and wildebeest are very similar.
Finally, from a true broadside shot, realize that a bullet that hits the large bones of the front leg was too far forward and wasn't on its way inside the chest anyhow. This changes dramatically if the animal is quartering toward you. In that case, penetrating the front leg bones is the only way to get into the chest. We owe it to our quarry to study the anatomy and place our shots in the area that gives us the most margin of error. For African antelope this is usually straight up the leg, at the intersection of the middle and lower thirds of the body. For North American animals, slightly behind the visible shoulder is OK for a true broadside, but if you must err, shoot a bit lower than higher. Don't forget that a rifle sighted in for 200 or 250 yards will often be 3 or 4 inches high at 50 or 100 yards. If the belly is hidden by brush or grass, or if you're trying to shoot over one animal to hit another one behind it, it's easy, easy, easy to shoot too high and fail to recover the animal.
Many perfectly hit animals can cover 200 or 300 yards before they tip over. In heavy cover, many are lost. Many people give up too quickly.
There are a few problems with the "no man's land" theory. First, much of the time these animals aren't recovered, and the assumption is that the bullet somehow went into this zone without killing the animal. If the animal isn't recovered you don't actually know where the bullet went. In reality, many of these injuries are too high - above the critical part of the spine. The vertebral bodies and spinal cord are much lower down in the animal than most people appreciate. Shoot just an inch above the spinal cord in the fleshy part between the spinous processes and not much happens. Some running, and a bit of bleeding maybe, but that animal will go a very long way.
The aorta and vena cava (huge blood pipes) run along and just below the spine through the chest region - right through the middle of the described "no man's land." Hit one of those, and it's over very quickly.
Many "shot placement guides" have the anatomy all wrong. In reality, the spine is very low. Look at these random pics I stole from the Internet:
These cartoons are WRONG, WRONG, WRONG. Sometimes they appear in state-published hunting regulation manuals and in hunters education material. Compare these to an actual carcass. Pay attention to the white stripe that runs above the vertebral bodies. That's the actual spinal cord - neurologic tissue. Hit it or the vertebral bodies, and the animal will be anchored immediately. Hit the spinous processes (bony spikes protruding upwards) and that animal will probably never be recovered. Penetrate the pleura of both lungs, even a little, and it's unlikely that animal will go very far. Such an injury will almost always produce significant bleeding and/or a pneumothorax (collapsed lung). Usually this animal will expire within a few hundred yards.
In the cartoon drawings, the spine is shown running just under the skin. From the split carcass, around the shoulder, you can easily see that the spine dips down 6 or 8 inches from the top, and that's ignoring an inch or two of skin and hair above that. At the shoulder, the half-way point between the top and bottom of the animal is just barely below the vertebral bodies. There are a ton of ways to miss above the spine in this region! In the neck region, the spinal cord is in the bottom half. If you've ever removed the backstrap muscles, you have already witnessed this, possibly without taking note of it.
Now, consider a bison:
I noticed this while butchering a yearling heifer this year. In the region of the "hump" the spinous processes can be over a foot long. It's truly impressive. The actual chest cavity is WAY lower than you might expect. Other humped animals like gemsbok and wildebeest are very similar.
Finally, from a true broadside shot, realize that a bullet that hits the large bones of the front leg was too far forward and wasn't on its way inside the chest anyhow. This changes dramatically if the animal is quartering toward you. In that case, penetrating the front leg bones is the only way to get into the chest. We owe it to our quarry to study the anatomy and place our shots in the area that gives us the most margin of error. For African antelope this is usually straight up the leg, at the intersection of the middle and lower thirds of the body. For North American animals, slightly behind the visible shoulder is OK for a true broadside, but if you must err, shoot a bit lower than higher. Don't forget that a rifle sighted in for 200 or 250 yards will often be 3 or 4 inches high at 50 or 100 yards. If the belly is hidden by brush or grass, or if you're trying to shoot over one animal to hit another one behind it, it's easy, easy, easy to shoot too high and fail to recover the animal.
Many perfectly hit animals can cover 200 or 300 yards before they tip over. In heavy cover, many are lost. Many people give up too quickly.