Stealth force.
I would like to know which month and year of outdoor life the "penetration" test was in. I am interested in doing some testing myself. This test sounds alot like what I am looking for.

I also think your idea of velocity affecting penetration is interesting. You have actually described the energy balance I mentioned in my earlier post. The KE in the energy balance is actually the KE per grain of arrow weight. In other words, the arrow weight doesn't matter, only Velocity^2 on a per mass basis. Now, all you heavy arrows addicts, don't throw your computer across the room. Your heavy arrow might have a per mass KE value close to the per mass value of a lighter arrow. This is why I am saying that KE is a great number that can be used to judge penetration.