Logic and resources:
The resources I used were:
The Mary Rose Relics Data.
Otzi's Bow
http://www.archive.org/details/chapt...eevol017966mbp
http://www.bio.vu.nl/thb/users/kooi/kobe97.pdf
http://en.wikipedia.org/wiki/Longbow lists the world record draw for a bow at 200lbs/900N. This is ST 16 for 4xBL.
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