If the goal is to stop the threat as quickly as possible, you need to put your rounds where they will rapidly cause the most dysfunction. The X ring on an old B-27 target is not that location. A quick lesson in anatomy shows that you need to strike the upper chest to most quickly and effectively stop the threat with center mass shots. Yes, a central nervous system shot delivered to the cranial ocular cavity or the spine will drop a person like a thunderbolt, but those shots are difficult to make under stress. You have a better chance of hitting the heart and lungs. But to do that you need to aim at the upper chest. A gut shot is not an automatic stop. It is not even a quick stop. Learn about human anatomy to help with your self-defense.
Into the Fray, Episode 45: Where Are You Aiming?
To stop the threat as quickly as possible, you must empty out as much of your attacker’s blood as you can—as quickly as you can. Aim for the thoracic cavity.
A Good, Solid 8
Everybody wants the 10-ring, but on a B-27 target your point of aim for a quick and effective shot should be just to the left of the topmost 8 on that target.