And in shorter barrel lengths (~8″) the 300BLK is way excellent for supersonics, a minimum of. Very long barrel 300BLK is in close proximity to pointless IMO, yow will discover other rounds that outperform it handily in precisely the same platform, with similar size barrels. This load was very accurate, https://riverusqus.bligblogging.com/39799288/the-2-minute-rule-for-300-blackout-reloading