Took me a while to find this:

http://www.bio.vu.nl/thb/users/kooi/kooi81.pdf

It is one of thepeer reviewed papers by Kooi. Go down to page 23. Beginning there you will find and excellent explanation of virtual mass and it's impact on performance. Note that althogh Kh is determined to be not entirely indendent of mass, efficiency is still an ever increasing function.

This is the accepted science behind the phenomenon we've been talking about. You guys call me arrogant but you are the ones arrogant enough to think you have a better handle on this than the scientists and engineers that have developed the theory. I have merely presented it to you.

Remain ignorant if you want to.Pretend you are scientists and engineers and run your little tests and convince each other you know better. Simple FACT is, you DON'T but you don't even know enough to know you don't.

You go ahead and stick with ArthurP, I'm sticking with the extablished science not a bunch of arrogant internet nobodies.

Have a nice day!

ONe last thing. Just in case you don't believe my source, here is the publication data...

Kooi, B.W. 1998. Bow-arrow interaction in archery. Journal of Sport Sciences, 16:721-731.