Was there ever a test done with the kevlar arrows?

Again,I agree with you and have never seen this happen without a reason,it is usually in the tune.But,I have never tested kevlar arrows and if an arrow can absorb more energy,then it makes sense it will produce better ke.


(Oh and by the way, it is impossible to increase the ke without increasing momentum and vice versa by only making one change e.g. arrow mass or bow weight or draw length etc.) AGREED

I was referring to the momentum being higher with the lighter arrow.It wouldn't be.

But,if indeed the 400 gr arrow has a higher ke value than the 500 grain arrow,the momentum could still be higher with the 500 grain arrow than the 400 even if the ke was higher on the lighter arrow.Regardless of what caused the discrepancy.