Medium action choices with dbm?

[TX_Punisher]

Not looking for a top loader which seems to be what I'm finding. I know defiance has one coming out but it's still 4-6 months away (I called).

Looking to be able to load out past 3" oal so I don't think a sa will cut it.

Is a long action with something like 300wsm mags my only option as of right now?

Thanks