As well as in shorter barrel lengths (~8″) the 300BLK is far top-quality for supersonics, no less than. Very long barrel 300BLK is in the vicinity of pointless IMO, yow will discover other rounds that outperform it handily in the exact same System, with exact same size barrels. This load https://300-aac-brass31751.thekatyblog.com/37274246/the-best-side-of-300-aac-reloading