Recent content by THplanes

No, we don't know that for sure. Most of the ideas about the mechanism are more theory than anything else. We do know factually that dogs shot in the thigh show an increase in intra-cranial pressure. That's really about all we know as hard factual data. I had a response to Odd Job just...

Yes it's unreliable, there are a number of factors that probably change how effective it is. Here are few obvious candidates: Stomach and intestinal contents Percentage of lung inflation Where your actual BP is on the systolic-diastolic curve Loss of elasticity of arteries Some people...

How? There are no large diameter blood vessels in the neck. The large blood vessels are in the chest. It's similar to this. If you take a 1/8" inch hose and rapidly collapse 3" of it, what happens to the pressure in the rest of the hose. On the other hand, what happens if you take a 1"x...

You can't talk about blood vessels as if they are all the same. Veins are low pressure and have valves. Arteries are high pressure and don't have valves. Arteries are designed to move blood efficiently. They're not designed to dampen BP. If you hold your upper arm and wrist at the same...

The bullet and the gun have about the same momentum. The momentum of the gun will be a little higher because of the momentum of the powder gasses that act primarily on the gun. K.E. is a totally different situation. Since it's based on velocity squared, the bullet has much more energy than...

According to this on SGAmmo, the European .410 does have a thicker rim than U.S. http://www.sgammo.com/product/centurion/25-rds-centurion-410-ga-3-4-pellets-400-buck-shotgun-use-only

Shear_stress and Loosedhorse already covered most of the problems in this post so I'm going to tackle this one. It doesn't take 35000 psi to seat a bullet on a loading press. It does not take 35000 psi to get the bullet moving. As soon as the pressure causes enough force to 1) expand the...

The powder gasses provide the energy that acts on the bullet and the gun. PV=nrt is making it more complicated than it needs to be. All we need is the equation for momentum. p=mv In this case the momentum of the gun is equal to the momentum of the bullet plus the momentum of the powder...

Small bore rifle prone - high master, junior national champion, state champion, distinguished, and 4 national records that I still have the certificates for. High power rifle long range - high master, 2nd in the state championship. High power rifle NM course - master. Small bore rifle...

Mall ninja is someone with a really nice gun that's been fired once or twice, maybe never fired. Frequently carry 3 ccws with 3 mags for each, 2 tactical knives, 2 flashlights. Those that have a ccw badge are on a level all their own. Taticool is the word for guns. It's defined as any gun...

Short version is it combines drag, sectional density, and bullet shape into one number. The higher the number the slower the bullet will lose velocity.

It's the same guy. He made the video with the different guns and springs because of the interest in the first video.

If you'll recall, the FBI choice before the Miami shootout was a Winchester silver tip. It traded penetration for velocity and expansion. Winchester supplied the round the FBI wanted. Now the FBI has different set of requirements. None of those address bone penetration. So the...

It depends on the bullet. I've seen slow motion video of the federal EFMJ through a 1" slice of ballistics gell and it was fully expanded. Critical defense should open very fast as well, it's one of the criticisms of it. Other bullets open at different penetration depths. As usual, the...

At the mid-line you're probably correct. As you move out the tissue increases in thickness.