I use the Lapua brass for my 7/08 and they dont make it so I buy the 308 lapua brass
and neck it down. you should be able to do that easy If you cant find what you want.
Be sure and check the necks to make sure that there is enough clearance in your chamber
(You may have to/want to turn them) I turn mine just to make them the same. (The Lapua
brass is very consistant so I just clean them up).