I have owned a Mark X in 30-06 for exactly one week. I purchased the rifle for $200 and i sold it for $200.
The entire affair was big and heavy, but it did point and balance well for off hand shots. The Monte Carlo stock with the slanted cheek piece offered me a full dose of cheek slap. The stock was cracked at the wrist and was very poorly fitted and bedded to begin with.
The action was rough. It required quite a bit of effort to open, cycle, and close the bolt. Compared to my other bolt actions, this felt like total junk. However, the bottom metal, with release inside the trigger guard, solid spring and follower, were precise and excellent. Heavy, but very good.
The trigger was heavy and had long creep. The side safety was a two position affair and it was not a smooth and quiet "click" to engage and disengage. It felt to be in the wrong place and it took too much effort to operate.
The bore was roughly cut (or hammered) and fouled with copper like none i have ever seen. Needless to say, the thing did not shoot worth a hoot.
I could have spent $1,000 to turn it into a nice rifle, but i am wise enough to know that for $1,300 i can get a Kimber 84L Super Grade, a muuuuuch better rifle than Mark X ever was or could ever be (even after customizing).