As well as in shorter barrel lengths (~eight″) the 300BLK is much superior for supersonics, at least. Extended barrel 300BLK is in close proximity to pointless IMO, you will discover other rounds that outperform it handily in exactly the same System, with same duration barrels. Considered one of two resources https://300aacbrass84073.blog-a-story.com/20263938/the-ultimate-guide-to-300-aac-brass