ORIGINAL: LittleChief
475 grains total weight for me. I was shooting 400 grains at 300 FPS, but opted for 475 at 270 fps. Actually, there was only a VERY slight increase in KE... not enough to matter. Trajectory didn't change much at all, and my bow became MUCH more quiet. I'm sold on a heavier arrow.
Good answer, I am going to hunt this year with 200 grain Muzzy Phantoms giving me a FOC about 21 %... I shoot 3D with a 430 grain, more stable in flight.