[jackstrawIII]

According to a medical journal I read, human tissue resonates at approx 2500fps. In order to induce "hydrolic shock", a bullet would need to be traveling faster than that to inflect permenant tissue damage outside of the bullet path. This is why you see such excessive damage with rounds like 7mm mag or 300 Win mag on deer. The meat will behaved in a large radius around the bullet path. Whereas a round like a slow 45/70 you can "eat right up to the hole".

As others have said, I think the NEED for fast bullets is largely exaggerated these days. Bullets kill by damaging vital organs. Doesn't take shockwaves to do so.

Hydrostatic shock is really unpredictable. It's whether the bullet overwhelms the animals bodily nerve responses so it doesn't run. Tends to happen with faster bullets, but you just can't rely on it to "kill". Killing is done by organ damage.