Ok rifle came back from Kimber today. They replaced the extractor and mag. Feeds and ejects much better but repeated cycles of the bolt on occasion still drops a round before its ejected. But with the new extractor I was able to identify a issue. Shooting Nosler factory loads. If you pull the bolt out of the gun and insert a case onto the bolt it will either be held or dropped depending on how the brass is rotated. Simply rotating the brass by hand it goes from tight to loose on the extractor. That is why it fails to hold the round when ejecting on occasion. So it appears as if the Nosler brass is defective. Either the case head thickness varies or the head is out of round. I'm going to pick up some hornady ammo this weekend and hopefully it will work correctly.
