I would rebarrel the AI and probably got for a 1:8 or 1:8.5 twist barrel for it, if that's me. I have tried the 7mm PRC, and I was not impressed. With the ammo we shot from it, the velocities were 150-200 fps slower than what Hornady said. Some of that I chalk up to the 22" barrel on the PRC. Why Savage chose that length is beyond me. I do think with a 24" barrel and the correct powders, the PRac comes out on top. There's just something about the .280 AI though I like. Maybe it's what my .280 Rem really wishes it was.