Even on a perfectly tuned bow, broadheads wiil fly different than fieldtips. It is only a matter of physics.IMO.
I totaly agree, the dynamics of a round clyinder shaped projectile(field point) is areodynamicly better structured to fly more true, no matter what, a broadhead will travel differently through the air than a fieldpoint. all broadheads will fly differently from one another I belive they all need a little tweekin, nomatter what you use..IMO