Jeff, if you got the time sometime, youd probably like reading the studies...

i read Momentum, KE, Energy and arrow penetration...not word for word, but a thourough skim and read most of it...puts it all into an understandable reading...

is it needed to setup a bow and arrow in ways that Dr. Ashby describes to hunt deer? i doubt it...but, one day, it might pay off...

found it VERY interesting that Dr. Ashby says....."Outcome studies show that lack of penetration is the number one cause of a hit being non-lethal" taken from the article...