Actually, I have all this stuff from my student days replicating stuff. This is now a active aspect of serious archaeological research called experimental archaeology. Getting a grant to build ancient siege engines or greek triremes must be awesome! Anecdotaly, during WW2 a researcher took a yew longbow and, using RAF armor plate as a safety backdrop let fly a bodkin ( the armor piercing round of it's day.) Much to everyones consternation it fully penetrated the plate. This was made a state secret for the duration <img src="images/graemlins/blush.gif" alt="" />.