I had a couple of MRC actions for a while and dumped them. They were too rough for me to finish. To slick them to an acceptable condition would have been expensive.
didn't know the a little oil and an evening or two cycling the action were so damned expensive .... Ohhhh the money I've wasted on all my rifles ....
If it was just a rough bolt then your right however the worst part was the outside finish. To polish and form it even would have required more skill than I have along with perhaps bead blasting again.
Nor does working the bolt fit a course safety.
The picture I showed does not see those problems but they made the actions not worth the bother.
At the time I think they were low priced at maybe $50 ea?
Perhaps if someone wanted a left hand action then its a different story.
On the postive side our trip to Montana was a lot of fun. Their shop was good and they were gentlemen.