And in shorter barrel lengths (~eight″) the 300BLK is way remarkable for supersonics, no less than. Long barrel 300BLK is close to pointless IMO, yow will discover other rounds that outperform it handily in the identical System, with same duration barrels. Hell, if you don’t foresee pieing corners, you might https://300-aac-reloading64073.wizzardsblog.com/39034092/the-definitive-guide-to-300-blackout-brass