Here is what I found and how it was treated. Test fire was performed and the weapon was found to be "short stroking." It also jammed several times trying to load cartridges into the chamber. The fired empty brass cases showed a lot of scores and scraping from loading and the cycle of the action. Borescope inspection of the chamber revealed brass fragments, both loose and "ironed" on to the walls and in general just a very rough finish to the chamber walls. There was very heavy cut marks from the extractor on the rim of fired cases.
The rifle was cleaned and the chamber polished with Brush Research Manufacturing {BRM} chamber polishing hones both 400 grit and 800 to finish. The headspace was minimum so I was able to polish out just about all of the tooling marks from the chamber. The locking lugs on both the barrel extension and bolt were very rough and I had to deburr and polish them. I verified that the gas port and gas block were in alignment and corrected {radiused} the very sharp edges of the extractor. The rifle was reassembled and test fired and functioned perfectly. The action cycled properly with no jams or glitches and the bolt locked open after the last round like it is supposed to. There are no more scratches or scrapes on the cases. Whether fired or cycled by hand the rifle has stopped damaging the brass.
It is hard to believe this thing was allowed to leave the factory so rough and malfunctioning!!!
Thanks again for your replies and interest in following this repair, and again sorry for the delay...it took a week and a half for the hones to arrive from BRM.
Edit: almost forgot...I did in fact cut two coils off the ejector spring. This rifle was throwing the empties like 12 feet. It also left a slight smear on the brass case head from the ejector plunger.
