There is indirect evidence of padding worn under chainmail in the norman era. It exists in the form of written account. Anybody cares to post first crusade erata on "Franks" (Normans).
Its either description of one of muslim writers (or perhaps even in the description of normans by Anna Komnena) about "Franks marching through the hail of arrows and not paying any heed to many arrows sticking out of their armour resembling the form of hedgehog" - this is hardly possible without a form of padded thick undergarment.
Also in antic warfare was known "subarmalis" garment - which is preciselly this. Medieval warfare in europe stands on roman legs. So think. It was known, then it dissapeared and then again magickaly appeared? Hardly. (Taking in consideration continuous use of chainmail since late roman iron age in europe.)
Also - regarding metalography - everytime I get into discussion with one of armour guys about chainmails, they start to rant about how many different "styles" of chainmail exists and how "wrought iron" is superior to that and that....
It does not bear much significance. The chainmail is not constructed to stop piercing damage. Its mesh. Look on the development of spear since migration period through the viking age till 11. century. Does the bell rings? That is the reason everybody used such big shield in the time when chainmail was cutting edge of armour technology.
There is also written accounts of warriors withstanding large number of cutting and smashing blows (Vilem of Kounic took over 100 hits during the battle at Lodenice in 11. century - as counted on his completelly destroyed fox fur coat - the battle itself took place in freezing winter - he was without any wound and he established a church upon his return home) which is not possible without padded undergarment. (Kosmas chronicle)
Such a test does not prove anything in terms how light "warbows" were. D. Tiller - you are just triing to lower the treshold to pass into warbow teritory, but it does not work that way.
When in war you want to do 2 things
1) beat the armour
2) outdistance the enemy
Even if 1) is achieved you still want to shoot over larger distance than enemy archer and also the 1) has to occur with reasonable regularity. Nobody deploys ineffective weapon and stays successfull for long time. This trigers arms race very well.
There are at least 2 examples of 11. century bows which are well over 100# in the cultural area we are speaking of and lots of others at least in 80# range.
Also we have written account in heimskringla (excellently versed actually) of shooting through chainmail (and also that SHIELD is the protection against arrow, not chainmail.
Anyway
“German Infantry Warrior, 1130-1140”. Abteikirche von Andlau im Elsaß.
David and Golias , Master from Tahul 12. century
So unless this sort of undergarment appeared by miracle between AD 1095 and 1150.......Go figure.
Objectives of this test is ultimatelly flaved. It "proves" nothing Also its obvious as Loki pointed out that 70# and 120# would need different arrow.
J.
(This is for both Len and Loki)