I'd recommend the MagPul Hunter American stock. I put one on a Ruger American (sold it on this forum) that was chambered in .358 Winchester and it was quite nice. A little on the heavy side, but it's a very nice stock and it did help the rifles accuracy.
I put a 6.5CM into the magpul stock and it is really a good shooter. I also put a .308 into a stocky's laminated stock and it is also a good sub MOA shooter and that stock is very rigid. There is a lot of flex in the magpul stock when you put too much weight on it shooting prone or off the bench and you can see that in the scope image on the target. That being said the 6.5CM is a light recoiling rifle and I just hold it firm enough and it shoots great but I would not buy another for that reason of flexing.