With your setup, arrows to be more specific, it's tough to get much of a helical which is the best fletch setup for fixed blade heads.

Once you have a tuned bow with matched tuned arrows the key to good broadhead flight is to get the arrow spining as quickly as possible out of the bow. This is done primarily with a helical fletch or at least, an offset fletch. I don't recommend straight fletch with fixed blades heads or planeing can occur more readily.

I shoot a helical 4" vane with my 100 gr. 3 blade Muzzy broadheads. I have used this setup on different arrows from Beman Trophy Hunters 70/90's to Beman ICS's, Easton XX75 and Easton XX78's and all with perfect arrow flight and groups out beyond 50 yards.

The amount of helical you can get away with is determined by the diameter of your arrow and the clearance need for your rest. Have your proshop check out your setup and help you decide.

Feathers definately drag more air and help a broadhead to stabilize and I recommend feathers to shooters having problem with flight probably due to a untuned bow or unmatched untuned arrows. A 3" feather drags more air than a 4" vane so you can see the corrilation to a 4" feather and so forth.

IF all else is right, 4" vanes are more than adequate and weather friendly.



<font color=blue>Good Luck and Good Shooting</font id=blue>

<font color=red>Rob</font id=red>