And in shorter barrel lengths (~eight″) the 300BLK is way exceptional for supersonics, a minimum of. Extended barrel 300BLK is in the vicinity of pointless IMO, you can find other rounds that outperform it handily in the identical System, with identical size barrels. There are lots of 300 Blackout masses https://300-blackout-reloading06395.blog5.net/87362509/how-much-you-need-to-expect-you-ll-pay-for-a-good-300-blackout-reloading