Trying to repair a Model 644 for a friend. The first round will strip and chamber properly, second round jams at an angle with bullet just entering chamber. The feed ramp looks good, I did some additional minor polishing, no difference. The extractor tip looks elongated and either causing or contributing to this condition. Not having a new extractor to compare, I wonder if anyone has any advise or photos of an unworn extractor or dimensions. Thanks a lot. I've owned several .380s and never had an issue.