Got ambitious and followed someone's advice. Pulled the extractor out of the gun. Little work with a file, some stones, and cold blue. Reshaped the end of the extractor so the chipped off area is gone and now there is a good edge to the end of the extractor. Relieved the extractor a little bit on the back side so it could seat a bit deeper. Stoned off the roughness and cleaned out the cutout, relubed and reassembled it. Some good news. Now it will chamber and extract blaser rounds. Some other rounds will not extract so easily. I think the problem is that the throating is all wrong, I think the throat or the lands are just slightly engaging the bullet! Drop a round in by hand and it moves a bit at the rear, I don't think the chamber is too tight. But after a round is seated by the slide, it takes a good rap to knock it back out of the barrel. I think I can see little marks from the rifling, maybe, at the base of the bullet. I think the extractor would be sufficient if the loaded cartridge was not, in some cases, jamming a bit in chamber. Methinks now I need a chambering reamer to clean up the transition from bore to chamber! I don't know how hard the steels are in this thing, but the quality of the gun is comparable to some Spanish guns I have seen. Or lesser Italians. I would have thought the French would have "had it together" with hundreds of years of armsmaking!