I understand you kinetic energy premise, but if you run the numbers, what you give up for a flatter trajectory won't sacrifice much in energy.

Something to think about (maybe you already have)

In the equation for kinetic energy, velocity is the squared value so dropping some mass also increases your velocity. The heavy arrow argument is an old one, just ask Washington State. Unless you are hunting truly dangerous game like elephant, hippo, buffalo, bears or the like, having a leading cutting edge type broadhead and a small diameter shaft contributes more to penetration than a super heavy arrow.


The trade-off with your recipe is more trajectory that requires an emphasis on range estimation and that translates into the possibility of a miss. Punching through ribs is easy and I have never seen an arrow "punch" through a shoulder blade... I am sure it is possible but the reality in my experience is that North American game is relatively easy to kill with a well placed shot and penetration is rarely a factor.


I don't recall how many deer and bear I have shot, I have additionally been involved with hundreds second hand and, in my book, a pass-through is a pass-through and that is the norm IF the shot is accurate.


Grouse are small targets.