I run a 450 bushmaster mag in my 22-250 american. It is a single stack and feeds flawless. Downside is that it only holds 3 rounds, and it sticks below the stock a bit instead of fitting flush. I'm sure it will work with any 308 family cartridges as well.
As far as the -06 cartridges, might try a 300 magnum magazine if they fit. They are single feed also I believe.
