Troubled glock needs help. I purchased new gun few months ago, put a mag or two of store bought fmj through and then got to casting. Started HItek coating at same time. Having bad leading and trying to find the issue. I've gone through a lot of the typical sticking points on 9mm loading with slugging, expanding, etc all covered. But one thing I'm wondering is the throat of the chamber, where the sharp edge exists. Is it possible that such a new gun has too sharp edge from never getting smoothed by fmj? I feel like maybe it's scraping off my coating as it enters barrel or something.