The MRC 1999 action is a very good design, with some slightly improved details over the Winchester Model 70 design. (I am not saying the 1999 design is "better" than a M70, but it is not the lessor of the two, either). It is cast by the same company that casts Ruger actions, and is a made from a relatively hard alloy, so the initial fabrication is good. In other words, all the basics are there for it to be a good rifle action. Unfortunately, after a great start, MRC has trouble "bringing it home," and the finishing process lacks the attention necessary to make it a well-executed final product. This holds true for their barrels, as well. As such, the rifles are hit or miss, with some users happy and other users unhappy.
When shopping for a CRF action where light-weight is not a primary consideration, MRC rifles would be high on my list, but I would not buy one sight-unseen, Rather, I would want to personally examine the actual rifle to make sure all the finishing details were properly done. This would include running a bore scope through the barrel. Or, buy a used example that has already been "proven" by someone else. I understand this is probably more work than most people want to deal with.
JMHO