springfiled 840 .222 extractor problem

Anyone run into difficulties with the brass-like plunger extractor on the Springfiled 840 or Savage 340 .222? I have one that will bend the leaf spring up and spin the extractor every time I chamber a round, rendering it inoperative, leaving the round in the chamber. There appeared to be a little bit of "buggering" where, I suspect, the outside surface of the extractor was rubbing against where the lug comes to rest (kind of a shelf there). I smoothed this and polished it, after breaking the edge slightly, but it did it again on the first chambering. I also chamfered the outside edge of the extractor slightly. It ruins the extractor spring each time it happens. I'd appreciate any help on this. Thanks.

Not ignoring you, not many people have knowledge of the old 340 series rifles. There are a few owners here that may chime in with advice.

Thanks.