I have a 300WSM built on a Stainless Steel Montana MRC 1999 action and I couldn't be happier with it. These actions are a true controlled feed, and incorporate the best features of the Mauser 98 and Pre 64 M70. The action is cast along the lines of the Ruger MkII.

Couple of things I really like about the MRC are:

1) Excellent bolt release system, looks very neat and very functional
2) 2 gas ports on either side of the receiver, as well as in the bolt plus large gas flange on the bolt
3) Trigger is excellent, no trace of any creap and consistent pull

One of the really big plus points is the internal length of the magazine box 3.1 inches, which means that you can really seat your projectiles out to make room for more powder. The action is still a short length.

Even though these actions are stainless, I did notice some rust appearing, so had the complete action black teflon coated. This has made the action even slicker working.

Hope this helps,

Michael.