Originally Posted by
Dan Lehr
Not wanting to get in the middle of the Johnson measuring contest, but even considering 3D and head tilt, those rounds wouldn't likely stop motor nerve impulse to the hostage taker's trigger finger.
Speed doesn't matter if you miss the off switch, which in that case would be the spine above C-4 going to the brain stem. Additionally, pistol rounds sometimes deflect off the thicker helmet (fore lack of a better term) structure of the forehead and even if they are successful in penetrating, they may not deliver sufficient hydro-static shock to sever the brain stem.
Nonetheless, good shooting, comparably my Johnson is .75"