The stopping power of a firearm relates to how well a gunshot can stop an assailant.

Historically, the US Army selected the 1911 Colt 45 automatic because of experience with native warriors in the Philippines who could still kill after being hit several times with a 38 caliber army revolver.


Basis: high kinetic energy and/or bullet deformation after wounding


Factors influencing stopping power:

(1) number of bullet wounds required

(2) location of the bullet wound on the main torso and thighs

(3) presence of body armor


Ideal stopping power:

(1) one bullet

(2) hit anywhere from shoulder to thigh

(3) effective against someone wearing body armor

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