I'm new to y'alls site, so I'm looking for information on some of the Ackley calibers. You're most likely right, but I thought I'd try a new rifle in my collection. I just bought a Remington 700, Etronix action (since I'm an Automation Engineer, the Electronic firing system intrigued me) Trued, Davidson bases, Benchmark bbl. in 6.5 x244 Ackley Improved. I'm most interested in the 6.5mm calibers, but (excuse my ignorance, because I thought I was up on most of the calibers) I started gathering information on the 6.5 X 244 AI and I cannot pinpoint it down to that designation. I can fine references to 6.5MM AI and 244 AI, but not specifically to that Caliber. Is it listed some other way? Thanks for anyone’s input.