The practical application of all this is that you want a pass through on a given animal. Once you have enough horsepower to accomplish this task, anything much above it is a waste of energy. So use an arrow that has features (one of which is weight)that will facilitatea reliable pass through. Much beyond that, increasing the arrow weight is going tosacrifice trajectory.

For me, with my setup, that arrow weight is in the low to mid 400 grain level. I personally like the feel of shooting 500 grain plus arrows, but probably won't hunt with them unless I find myself trying to arrow something like a bison. Even then, I think the small diameter slick shaft of an Easton Axis FMJ might stillequal the penetration ofa heavier but fatter Carbon Express Terminator.