Like BLUE RIDGE BRASS!! I get all my 40 cal (filthy due to the fact I have the means and can easily clean it myself) conditions from Blue Ridge Brass! I get it with the four,000 at any given time and have never had a 10mm scenario in the bunch, https://40-s-w-brass52851.webdesign96.com/38724597/detailed-notes-on-40-s-w-once-fired-brass