http://home.att.net/~sajackson/archery3.html

http://www.bowyersedge.com/arrows.html

Every search I do keeps coming up with these same two links. Haven't read them fully yet, but hopefully they'll provide some clues.

Straightarrow, here's an example, one of Norb's reports-

http://www.martinarchery.com/mag/bwfury.html