Some of these points can and will be argued as long as there are archers. Find a combo that works for you and stick with it. I personally prefer a light arrow 340-350 grains with 12% to 15% FOC. I shoot a 60# bow, and last year this combo had plenty of momentum/KE to completely pass through my Mulie at 51 yards. If I am in a Treesatand where shot distance is limited, I would have no problem using heavier arrows. I just don't see the need

Dan