Paul you are correct about GoldTips charts; however, earlier I cross referenced his data off of other programs. He is looking good at the .400 spine (5575) if he keeps his bow at 65 pounds. When or if he dials his bow up to 70 pounds then yes I would recommend the .340 spine (7595)for his set-up.

I have shot 29.5 inch 5575 GT XT Camo Hunters from my 31 inch draw at 65 pounds with speed cams and they were shooting great groups out to 50 yards. I went with the 7595 to give me a better hunting arrow (more weight)and yes more consistency as the arrows age.