Like BLUE RIDGE BRASS!! I get all my 40 cal (dirty due to the fact I possess the sources and can easily clean it myself) conditions from Blue Ridge Brass! I get it by the 4,000 at any given time and have not had a 10mm scenario during the bunch, https://troyufqzi.csublogs.com/45857509/the-smart-trick-of-clean-40-cal-brass-that-nobody-is-discussing