Actually I am not like 17 pages behind. I am like, current. I have read them all. Additionally, I am aware that there are many variables that contribute to the penetration of an arrow (material of construction, diameter, coefficient of friction, etc., etc.). I am also aware that changing more than one variable at a time muddies the water of drawing any meaningful conclusions about the outcome of an experiment. What I wasn't aware of was that this was not a public forum in which I could impart any information I felt the major urge to impart, regardless of the "bigger and better things" one perceives to be the topic of conversation. Forgive my trespass. In the future I shall endeavor to be more mindful of protocol. Perhaps seeking your permission prior to submitting a post would be appropriate?