As well as in shorter barrel lengths (~8″) the 300BLK is far superior for supersonics, at the very least. Lengthy barrel 300BLK is near pointless IMO, you can find other rounds that outperform it handily in the same platform, with identical size barrels. This load was very correct, besting probably https://300aacbrass20639.newsbloger.com/39618094/the-best-side-of-300-blackout-brass