Jeff and Muzzy, I'm really sorry this did not come up about a week ago. I just cleaned up "my" room in the basement, and thought I didn't need the paper where I wrote down all of the spine #s for the dozen Victorys I bought last year. I don't know if anyone would really want to rely on the #s I got with my homemade spine meter, but it did show that ACC 3-60s barely made the gauge move at all. Victorys were the next best, and CT Cheetahs were a close 3rd. My son's Gold Tip XTs had much more variation, though to be fair, they were used arrows that came with the bow, so who knows how much use/abuse they took.

As far as spine degradation, I though the original Axis 400s changed quickly and groups showed it. Likewise Blackhawk Vapors changed fast and I had issues with splinters even when trying to refletch. My Carbon Tech Cheetahs have be very durable for what they are. JME