I think what jeepkid is asking is that he wants a standard factory rifle in 243 and then have its chamber reamed to the AI version.This would be a little more economical that have a new rifle re-barreled. That would'nt be a bad idea if funds were limited.

Back to the 6mm-284, I had onebuilt 14 years ago and have had very good results with it as a varminter and a deer rifle. It shot like "a house of fire" with the now discontinued Barnes 75gr X bullet..here's it's best group. With the Nosler 95 gr Ballistic Tip it's like a death ray on deer.