I run M7's with Mt Rifle (.223AI 21"), Douglas #1 (.223AI 22"), Douglas #2 (.308 22"), and Douglas #3 (.358 21") contours in Edge fill McMillans. All of those will fit in an Edge/Compact, Mountain Rifle, or M7 pattern McMillan stock. I'm not a big fan of the M7 pattern stock so I default to Edge, Mt Rifle, Classic in that order.
If you're picking a contour, think of contour with a M7 no differently than a 700...there's not that much difference in the actions. Barrel balance with stock weight is how to think.
With a light weight stock and a .308 hole, a sporter/#2 from 20-22" should balance slightly forward.
