ORIGINAL: davepjr71
Not correct of heavier having edge everytime. you'd have to have a huge diff in weight for that statement to be true. A lighter arrow with a FOC in the 19% range can out penetrate a heavier shaft to a point. Also, my 391 gr out penetrate my 520 gr. FOC of 391's in about 18%. FOC of 520's is 11% or so. Weight forward helps penetration too. Also, lighter arrow traveling faster usually always has a higher KE at the same draw weight.
Of course, this stirs the same issue as The physics being fun post in here too.
Wrong!! It will always have less K.E (goto bowjackson archery )they have all the info you need, that is of course as long as you are shooting arrows that are'nt below the weight recommended by your bow manufacturer!