ORIGINAL: Jawshooter
One thing you should look at is over all weight of the arrow. Try to find something that you can get as close to 5gr per pound for your draw weight. The extra amnt of speed you pick up could just mean the difference between a 10 and an 8 on a target.
Use the Arrow Dynamics .395 Mag Arrows. I have the blue label (8.0 gpi) and the yellow (7.5 gpi) and they fly faster and flatter than my hunting arrow (CE Maximas).
http://www.nitrostinger.com/products.cfm