Thanks for the replies!!! I had heard and suspected about blends used by ammo companies, oh well, I can make one that better suits mine anyway. I sold a rifle the other day so I could start on my first custom that I've been wanting for 15 or so years. I found a model 700 in a pawn shop that I plan on trying to make a deal on today. The rifle is a 22-250, I want to build a 22-250 AI with an 8 twist barrel??? I bought a scope the other day that will slow me down for a while, spent a bunch of money!!! I plan on going ahead and mounting it on the factory rifle and shoot it until I can gather the money for a custom barrel, chambering, truing, etc. If you all have any thoughts on what I plan on doing, I'm listening. Thanks.