I hear what you are saying. For hunting I use aluminum 2314's weighing 485gr.
and use this for deer,bear and elk. Why do I use such a heavy arrow compaired the
lighter arrows? Because I had bad experiences with light carbon arrows while hunting
and lack of penetration with these. I went back to the old reliable aluminum arrows
that usually blow right through game. My thoughts are the heavier arrow and their
momentum down range are harder to stop thus increases penetration. I guess it
really makes no difference what the arrow is made of, the added weight of the
entire arrow is what is important to me.