And in shorter barrel lengths (~eight″) the 300BLK is far exceptional for supersonics, at least. Very long barrel 300BLK is near pointless IMO, you could find other rounds that outperform it handily in a similar platform, with same duration barrels. Jake travels the state taking pictures, directing precision rifle matches, https://300-blackout-brass30638.bloggerbags.com/44052232/the-ultimate-guide-to-300-aac-brass