Tfox, did you actually make it, or was it from you archery software? The reason I ask, is that I've never seen one for sale, or known anyone to shoot them. I knew they increased FOC, but I never knew by how much. In theory, they sound great, but I was always leary about the 40 lb spine range. As familiar as I am with dynamic spine and how the spine ratings on many arrows can be misleading, I wondered about these.

If they are spined correctly at 70 lbs, I'd love to try them. Unfortunately, I'd then have to find a shop that sold them. I wouldn't buy them without shooting a sample first.