And in shorter barrel lengths (~8″) the 300BLK is far excellent for supersonics, at least. Lengthy barrel 300BLK is around pointless IMO, you will find other rounds that outperform it handily in the same System, with same duration barrels. The five.fifty six NATO origin story operates through the turbulent sixties https://300blackoutreloading02171.review-blogger.com/60496731/the-definitive-guide-to-300-blackout-brass