I figured I'd better explain some of this further. This is the exact quote from the ballistics study MikeG found (see last post on previous page for source):
Quote:
The theory of Martel [Kneubuehl 1999] says
[6 ] Ed = Cv*V
, where Cv is a constant depending on the properties of the target material and V the volume
of the ensuing hole. Therefore the size of the inflicted area is directly proportional to the
dissipated energy Ed.
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Here is why this equation DOESN'T apply to airsoft:
- V is VOLUME, not area - Easy, coincidence you left that little tidbit of info out? They do say "Therefore the size of the inflicted area is directly proportional to the dissipated energy Ed" - however it appears that the wound is probably assumed to take a cylindrical shape so in which case the volume = cross sectional area x length/depth. Now the formula is clear V = volume.
- Ed is the dissipated energy: essentially ALL of the energy that the bullet has (at impact) is transfered (ie.dissipated) into the tissue...the bullet penetrates the tissue and stops so where else can the energy go? If a BB does NOT penetrate and bounces off, not all of the energy of the BB has dissipated into the tissue (or else it wouldn't bounce off).