As well as in shorter barrel lengths (~eight″) the 300BLK is much outstanding for supersonics, at the very least. Extended barrel 300BLK is around pointless IMO, you can find other rounds that outperform it handily in precisely the same System, with similar duration barrels. Growing up on the secluded farm https://300-aac-blackout-brass29517.look4blog.com/75393265/the-5-second-trick-for-300-blackout-cases