What is more likely to break your neck or cause cervical injuries; the bat, the baseball or the bullet?
How can you say that a perpendicular hit from a bullet to the head will cause neck/spinal injuries, when there clearly is not enough momentum to cause that amount of injury? The kinetic energy of the bullet is irrelevant. It won't suddenly cause the head to go from a stand still, to super fast speeds breaking the neck. That is momentum, and the numbers are there.
The physics do not lie.
In another thread, about bullet proof vests, I posted a video demoing a guy taking a .308 at point blank range in the abdomen while wearing rifle proof body armor. Not an inch of movement.
How is that suddenly not the case when struck in the head?
Yes, the offset is important in regards to trauma from BFD, but if it does not penetrate it does not penetrate.
Will it hurt? Probably like a motherfucker. Will you go down from the surprise of being hit? Most likely. However, that is NOT from the bullet impacting the helmet, that is a result of the wearer being freaked the fuck out.
And how exactly does shooting windshields transfer over to inelastic collisions between projectiles and helmets?
An example for you:
The momentum of the so-called "manstopper" .45 ACP bullet is approximately that of a 1 pound (0.45 kg) mass dropped from a height of 11.4 feet (3.5 m).
The same .308 will equate to throwing a 2kg crowbar at 4m/s at a guy wearing a helmet. If that does not break the guy's neck, the bullet will not either.
Watch the clip in this link:http://soldiersystems.net/2012/05/24/i- ... -about-it/
Read the comments.