I have a Ruger 9e. It fired about 300 rounds and then failed to extract a couple of times. I requested warranty service. They paid shipping both ways. They replaced the extractor and the barrel. The chamber is mirror-polished as is the feed ramp, and where the feed ramp enters the chamber, it's radiused just a little bit and polished, Looked like pretty good custom work. It came back with a note saying what they had done, and that they had test-fired it. They had it in their shop less than a week.

This afternoon it fired a bunch of ammo flawlessly.

Pistol should not have failed, but Ruger appears to have taken care of it.