A buddy of mine had its big brother, a Mauserfield, on his 6XC PRS rifle. At a match, a few months ago, I had the opportunity to use it for a couple of stages. I was impressed. It felt buttery smooth and functioned perfectly. But, a couple of matches later it developed extraction issues. After some troubleshooting with the factory by phone with no success, he sent it back to the factory. The returned action had a replacent extractor, and functioned properly. Unfortunately, having lost confidence, he sold the action and returned to his Surgeon 591. I would have liked to see how it performed over time.
Out of curiosity what kind of extraction issues was he having? I have a long action magnum and haven't had any issues that I can think of in near 1500 rounds and several thousand more dry fires.
As for the Nucleus I got my action last week but am still waiting on the barrel so I haven't gotten a chance to shoot it or test feeding and extraction. I did dry fire it quite a bit and it is buttery smooth with a relatively light bolt lift. I can lift it up by running my pointer and middle finger up and close it with my thumb, much quicker than I expected but it is my first short action.
I'll provide an update when I get my barrel and actually get a chance to run it with ammo.
He said that it would intermittently fail to extract the case(grab the rim) from the chamber requiring it to be pushed out with a cleaning rod. There were no issues with the cartridges/cases causing the problem, as he finished the match with his back-up rifle. Visually, the extractor(and brass cases) looked OK, and as mentioned, the replacement worked fine.
I fully agree with the smoothness. It was immediately noticeable, and one of the nicest feeling actions I have used. It’s good to hear of your positive experience with your Mauserfield, and looking forward to your updates on the Nucleus.