I'm guessing that you are "shooting so good" using the broadheads that you hunt with. If not, then it's a whole new ballgame when using broadheads. Fixed blad broadheads fly straightest with heavy tips on arrows that are spined correctly, or a bit stiff. The only reason most don't want an FOC over 15% is that the arrow trajectory tends to fall off too rapidly on very high FOC arrows. The heavier tip, tends to pull the arrow on line, resisting side forces. Lots of drag, (read: 5" helical feather), helps to let the tip direct the arrow. When using a fixed blade broadhead, which will have the tendancy to plane off line, higher FOCs can be very helpful.