As well as in shorter barrel lengths (~eight″) the 300BLK is far top-quality for supersonics, at the very least. Very long barrel 300BLK is around pointless IMO, yow will discover other rounds that outperform it handily in the exact same System, with very same duration barrels. The 5.56 NATO origin https://brass-300-blackout50727.boyblogguide.com/36649425/the-definitive-guide-to-300-blackout-brass