Dunno if this is pertinent, but in the extra informative bits on the HUNTED dvd, the professional knife fight trainers remarked: "Most knife fights don't last as long as the one in the movie. But (like this one), if they do, one combatant will be dead, and the other will need to be hospitalized." (or words to that effect.)
AND since I'm speaking of the HUNTED...(I watch the few tapes/DVDs I have over and over)...that movie just keeps on getting me more and more aggravated. So MUCH could have been made of the talent and story. Instead, the impossibilities and inconsistencies occur again and again.) [end of rant]
And this bit on bullets 'n stuff:
Hydrostatic shock
From Wikipedia, the free encyclopedia.
Hydrostatic shock is the effect commonly believed to be caused by a high velocity object entering a body, such as a bullet fired from a weapon.
The shock is described in the following waythe object will cause ordinary damage by the actual penetration, but also pass a shock-wave in the surrounding tissue due to the energy of the slowing object being passed into the largely liquid material of the body (65%+). The shockwave, or sometimes competing shockwaves from multiple impacts, are believed to cause greater damage than the object itself, sometimes enough to rupture internal organs and fracture bone. Especially large objects are believed to cause hydrostatic shock by the closure of the cavity created by the object's passage.
There is a body of opinion, however, that believes hydrostatic shock is arrant nonsense. The argument is based around how energy is transferred and the effects of such a transfer. Issues raised include kinetic energy vs. momentum, the rate of energy transfer, thermodynamics (the energy transfer would be into heat), the speed of sound in tissue, hydrodynamic effects, 'wound tracks', and the nature of a body.
That the effect exists is possibleexplosions in water will damage nearby solid items by the transit of shock wavesbut this is not in the same category of effect as a bullet strike. However it can be said that a lot of people do believe in the effect, which others would claim makes it merely "well-established superstition".
I'm remembering a waxed paper half-gallon milk container, filled with water, put on a stump and shot by a LOVELY little .22 Hornet 200 yards away.(That was such a pretty little gun...single shot, European, and not-mine.) Only the bottom of the container remained.