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Old 04-30-2016, 08:06 PM
Bear_Nenno Bear_Nenno is offline
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Join Date: Jun 2000
Location: Nangarhar Province
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Originally Posted by Mr. Bill View Post
It's a common, almost mandatory, trope in movies and TV. The hero is involved in a gunfight, takes one or more gunshots to the chest and goes down like a sack of beans. Later, after the dust clears, he peels back his shirt to reveal a bulletproof vest with the bullets lodged in the fabric of the vest, sometimes flattened, sometimes protruding out like there was no damage done to the bullet.

My question is, is this the way it actually happens? Does the bullet get lodged in the vest, or does it actually get stopped and fall away? With the absence of penetration, is the momentum of the bullet enough to knock someone down, with loss of voluntary muscle function for a moment or two?

On a related note, why is it that a kevlar vest will stop bullets, but not a knife?
The bullets get caught in the vest. Here is a decent video showing bullets hitting kevlar.
What is not mentioned in the video is that a vest must not allow the hole in the clay to be deeper than 40mm, or the vest is not rated for that particular bullet at that velocity. In the test shown in the video, you can see how a vest can still stop bullets that it is not rated to stop, but the deformation in the clay will be great, which means that the person wearing it would have suffered greater blunt trauma. But at least it isn't a penetrating injury.
So it's possible for someone to be knocked down by a bullet while wearing a vest. It's also possible to just stand there and take it. It all depends on the vest and, of course, the rounds fired.