And in shorter barrel lengths (~eight″) the 300BLK is far remarkable for supersonics, at the least. Lengthy barrel 300BLK is in the vicinity of pointless IMO, you will find other rounds that outperform it handily in the identical System, with exact same size barrels. Opinions can only be submitted although https://300-blackout-reloading32852.onzeblog.com/37866413/the-definitive-guide-to-300-blackout-brass