Why can't I find any kind of AW magazine for long action calibers? I have a .270 M700 that I'm starting to build, and I love the caliber. Dimensionally, .308 cases look about identical to .270 cases save for length. Assuming I milled out the feed ramp and bottom end of the receiver to allow the AW mags to seat properly and feed properly, I don't see a reason that the .270 couldn't have AW magazines.... except that I can't find a single AW magazine for long action. Am I missing something? Why don't they exist? Is this something that could be fabricated?