I'm the proud owner of four cavities in two rifles. All from wlr primers. I didn't know what was happening until I blew an extractor off my Marlin XL7.
I've seen Lot number lists a quite a bit longer than what was posted above. Personally I think Winchester knows at what point in time they cheapened up the thickness of their cup and when they fixed it. It kind of feels to me like they're playing coy with people reporting lot numbers and acting like they're cooperating.... when really I think there should be a huge recall. Ill never use Winchester primers again.