Rate of loosing, ok I'll use that.
Thank you both for your insightful points.
I recently thought of a few things adding to that, though not necessarily backed up by any sources as of yet.
-I've been of the opinion that volume of arrows (which in my mind became equated with rate of discharge) in a rough zone was more important in a medieval battle than accuracy or penetration power (only a very small percentage of who you fight is going to be encased in steel, and even then there are gaps), but perhaps a concentrated volley is even more important than that, and getting the volley land where the enemy is (a form of accuracy). And with a concentrated volley, you'd be loosing arrows at a rate that isn't necessarily top speed, if bowmen even concentrated on this at all.
-the main effect of archery on enemy formations would be to disrupt or slow them down. You might not die being hit with an arrow, but it would sure scare you and slow you down! And being under a barrage of arrows would be a very demoralizing thing, like being under an artillery barrage almost. You'd either reach the close combat exhausted, demoralized, wounded, or in broken formation. And so rate of discharge might not be as important to causing this as concentrating the arrows more accurately by range zones. Are there any sources that mention this idea?
-Pitched battles, even in the later middle ages and Renaissance, were rarer, were they not? Many things I've read indicate that siege warfare was much more common, and even then assaults on a defensive position rarer than just cutting off supplies. So in the event of an assault, a bowman would not necessarily have focused on insane rates of loosing if they were ducking under a castle wall or a pavise shield where they'd have all the time in the world to renock and draw.
Anyway, thank you for your posts, that's a good clarification. I wonder if rate of discharge was even all that important to horse archers, some of whom would have used composite bows with just as high of draw weight as warbows if claims of their range are to be believed. Would be quite a challenge for them too, and maybe the zillion arrows per minute thing is more of a modern way of showing off than a historically accurate feat for medieval archery.
Your thoughts?