I've shot a bunch of both tapered and parallel cedar arrows Rusty, and for me, the tapered is worth enuf that I made up a rig to do my own. IMO tapering does a few things: it moves the CG of the arrow forward (FOC); it lightens the rear of the arrow, helping with recovery from paradox; and I think it kinda "tillers" the arrow and evens out the bend thru paradox. Tapered shafts shoot straighter and more consistently for me.