I am building a 6.5x284 on a BAT HRPIC action. For those not familiar it has a long action M700 footprint. Does anyone have any recommendations for bottom metal and specifically the magazine? I would prefer a detachable magazine but am also open to a standard box magazine. Because the 6.5x284 is a "medium" length cartridge, most of the magazines I have looked at are not ideal for this round. I plan to shoot 140-142 grain bullets with an OAL of slightly over 3.1". I am looking for a system that holds at least 3 rounds and preferably 4, that will feed and function flawlessly. Let me know what you guys think.