animalpest wrote:I don't need a "hint".
Nor do I need the idea that it is just momentum. That is plain wrong.
The issue is that your using the term hydraulic shock incorrectly or don't understand what it is.
Hydraulic shock is a pressure surge or wave caused when a fluid in motion is forced to stop or change direction suddenly; a momentum change. The only other usage of the term is when its used incorrectly (it seems only by hunters BTW) as an interchangeable word for Hydrostatic shock.
animalpest wrote:If you had read what I said before, it is about velocity and energy. Let's take a 375 H&H, with 4500 ft/lb of energy. I shoot a goat through the chest/lungs. Massive energy for that animal and very large "momentum". Open the goat and behold, a bit of bruising after the goat walked 50m before falling over.
Now I use my 243 with only one third the energy and a piddly amount of momentum by comparison. Open it up and the whole 2 lungs are soup with bruising through the whole rib cage.
Hint - I have actually necropsied both!
As you said, momentum is weight X velocity. Energy is slewed towards velocity as it is squared.
First off I said momentum is mass and velocity not weight X velocity as you said, these aren't the same thing in case you don't know.
Momentum is not kinetic energy, if you shoot a rifle it recoils with the same momentum as the bullet, but doesn't have the same kinetic energy. Kinetic energy depends on the velocity of the object squared (as you said).
What causes the differences in wounds from a gunshot are shape, size, mass, velocity of the penetrating object and the tissue type involved.
Gunshot wounds are high-velocity/low-mass injuries, they cause massive cavitation induced by a high-velocity bullet encountering the fluid in the body. It creates a massive internal "explosion" as the kinetic energy of the bullet is transferred to the surrounding tissue. This crushes and stretches tissue in a wide circular pattern around the impact site, creating trauma far in excess of what the entrance wound would suggest.
This is what you describe from your example with a goat and different velocity rounds.
While this may sound like what is described as Hydraulic/Hydrostatic shock its not.
Hydraulic/Hydrostatic shock theory claims it produces a pressure wave that causes "remote neural damage", "subtle damage in neural tissues" and "rapid incapacitating effects" in living targets.
So when doing our necropsies, you should be looking for remote damage to brain and spinal cord if you want to show Hydrostatic shock is real.
animalpest wrote:Momentum has nothing to do with hydraulic shock.
Basic ballistics science 101.
Yes it does, its even involved with hydrostatic shock. i.e. A shock wave has momentum.