ORIGINAL: mcfadden222
Ok now I have a whole new problem, I assume GPI is grain per inch? The heavier, the better they fly in wind and penetrate? The lighter, the flatter they shoot? What is the difference in spine values? I see 0.5, o.35, 0.4, what the best for what application? thanks
What draw length, arrow length and poundage are you shooting? As Greg said, the tech chart has yet to be updated with the 08 information.