Really like BLUE RIDGE BRASS!! I get all my forty cal (filthy because I possess the assets and can certainly clean it myself) instances from Blue Ridge Brass! I get it via the 4,000 at a time and have never experienced a 10mm situation from the bunch, nor a 9mm https://reloading-40-s-w07395.blogminds.com/5-essential-elements-for-clean-40-cal-brass-33885055