I think what is more important to the stable flight of a fixed broadhead is the drag that a helical provides. I think that this may be more important then the actual rotation of the arrow. I wonder what others think of this. We calcualted on another forum that a helical will only provide about 2 complete rotations of an arrow at thirty yards shot out of an average bow.

http://forum.hunting.net/asppg/tm.as...ode=&s=#379756