Oh, I forgot to mention the two types of bodkin head. I believe that 250 yards would probably the the maximum effective range for a warbow with war arrows, which are 1 1/4lbs each. By comparison modern arrows are very light. I belive the reason the longbow went out of service was its difficulty of use. Learning the bow was something of a vocation. By contrast crossbows took weeks to learn.

After the Black death hit I think there were a lack of yoemen with the skills and this was when guns became more prevelant. When you think about it the longbow out performed muskets until the early 19th Century and the Baker rifle.