Hydrostatic Shock
Sabotloader: Your comment about the presence of hydrostatic shock in ML's caused me to pause, since I was told this by my cousin who (I thought) knew everything about bullets and ballistics. He was the one who told me it only happened above 2600 fps, so that's what I've believed since the early '70's. Of course, I have passed this "wisdom" along to many people.
I just did a google search on "hydrostatic shock" and was quite surprised at what I found. The "opinions" and "expertise" seem to follow 3 lines:
1. Some say that it refers to the tissue damage caused by a high velocity (no speed given) projectile (especially a mushrooming projectile) passing through bone, muscle and organs. That's pretty much what I thought it was (except for the speed).
2. Some believe it refers to a "shockwave" set up by the projectile that causes extreme hydraulic pressure being sent through the bloodstream so that it "shocks" the brain and central nervous system, sometimes even when the hit is in an extremity, such as an arm or leg in a human. The illustration of the hydraulic braking system of a car is used as an example of the effect.
3. Some say the whole idea is bunk. True hydrostatic shock only occurs in a closed system of pure liquid, such as a jug of water. Animals and humans are comprised of a high percentage of liquid, but they also contain bone, tissue, organs and veins/arteries which have a degree of elasticity - - thereby preventing hydrostatic (better termed "hydrodynamic) shock from occuring.
So - I guess "tissue damage" might be a better term to use, and I agree that it certainly does happen with ML's.
AND - to keep this thread on track - placing any well-made bullet in the vital areas of a deer will cause death within a short time. A bullet does not have to mushroom perfectly, nor create an exit wound to kill. It just needs to cause enough tissue damage to cause extreme hemorraging and/or trauma.