<BLOCKQUOTE id=quote<font size=1 face='Verdana, Arial, Helvetica' id=quote>quote:<hr height=1 noshade id=quote>So, does a carbon penetrate well because it's light with a high KE, or does it penetrate well because it has a narrow shaft diameter. Should we be buying light, narrow diameter shafts or heavy, narrow diameter shafts? Or doesn't shaft diameter matter?
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Or, do narrow shafts only matter when dealing with high friction media like foam blocks. Would it matter much on lubricated, low friction, live flesh? We could add dozens real-life variables that would likely affect the results. We can guess on all the variables and try to figure them out, but for now our best advise to archers looking for maximum penetration is probably best left to the known factors. Well tuned bows with very sharp broadheads(especially cut-on-contact types), penetrate deer better. Add the fact that a higher KE will increase the odds of adequate penetration on shots hitting hard bone.