Antler Eater,

I am quite certain about the arrow weight and have been using the same arrow setup for about five years now. This is my first year to hunt with this bow. I had a Mathews Z-Max before and it shot about 269fps with this arrow setup. Not wanting to show too much ignorance; but I have to ask what is the deal with the kenotic energy equation?
I am not at all clear about heavier arrows. When the guys I hunt with started bow hunting about 9 years ago we came upon the arrow controversy. I thought that we had settled it then, maybe not. We shot every arrow we could get our hands on through a sheet of ¾ in plywood. It was not even close. The skinny carbon arrows (AFC V-Max 2300) out penetrated everything else by at least 8 in. We shot them against the AFC 2400 and 2500 which are heavier but they did not out penetrate the skinnier 2300. So the conclusion we came to was that it was more a question of friction. The larger the arrow diameter, the more friction and less penetration. The aluminums we shot did not make a good showing at all. All of the carbons far out penetrated all of the aluminums. So the reason I am shooting the skinny arrows is because of this test. I did try filling an arrow with silicone to add weight. It added about 66gr (516gr) but the silicone made it hard to glue the nock and it kept coming out. Not to mention it was very messy!
I would change arrows tomorrow if someone could show me that another arrow will out penetrate the one I am using. I have a shop full of arrows that I have tried over the years but after 9 years I am still shooting the skinny arrows ( AFC is no longer in business but Cabelas SST 230 and Carbon Tech still make them ).

Wayne B.