As well as in shorter barrel lengths (~8″) the 300BLK is way superior for supersonics, at least. Lengthy barrel 300BLK is near pointless IMO, you can find other rounds that outperform it handily in the same platform, with same duration barrels. The aac-sd with 110gr Sierra varmint bullets will shoot https://brass300blackout74073.diowebhost.com/93991691/the-best-side-of-300-aac-reloading