This is an old assist for loctite use, use the blue strength and add a small amount of baking soda on the wet Loctite, tighten. adds a small amount of grit,
Tried a reflex but would get sunglare at certain times of day and direction went with a Ultradot Matchdot II and now 25 yards is easy and 50 yards almost so. http://www.ultradotwest.com/ultradot_2008_005.htm
wife had issues for about 2 mags with a SR9C, now don't get in her way. 1000+ rounds later she still is improving with her shooting with NO issues with the SR9C. :D
sounds like extractor is not gripping the rim of the casing, first do a complete bolt cleaning and pay attention to the extractor, the grip part, the hook should have crisp edges to grab and eject the spent shell
I check and clean my wife's SR9c after every range trip. Job is is so easy and removing striker just as easy, make us feel better knowing firearm is ready for next use.