The focused pressure wave created during a direct torso impact on soft body armor,
up to and including NIJ STD Threat Level IIIA, can easily cause sufficient internal
injuries to immediately incapacitate, and possibly prove lethal. However, the Polyshok
projectile will typically fully expend all its energy without penetrating a single layer of Kevlar.
This video shows just how transparent soft body armor is to the effects of the Polyshok
I.R.P. We covered a 2" thick concrete block with a NIJ Threat Level II ballistic vest panel
and fired the I.R.P. into the center of the vest. Judge for yourself how the "bad guy" would react in this situation.
The older type of round-nose hollow base shotgun slugs often deflected off the skull.
The German Brenneke slug has a sharp shoulder like a wadcutter bullet and that one dug
right in and did massive destruction. After those tests, the Brenneke slug became standard issue
for LEO’s and fish cops in bear country. I spoke with a North Slope Borough LEO who had to
shoot a grizzly in Deadhorse, AK with a Brenneke. It was a one shot kill and he was very
pleased about that. After that, guess what kind of slugs 43north carried in his 12ga. when
he wasn’t carrying his Marlin .45/70 (or is .22 pistol)?
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