As well as in shorter barrel lengths (~8″) the 300BLK is way superior for supersonics, a minimum of. Extended barrel 300BLK is close to pointless IMO, you will find other rounds that outperform it handily in a similar System, with similar size barrels. Hell, in case you don’t foresee pieing https://raymondrclxg.blogspothub.com/37812498/300-blackout-reloading-can-be-fun-for-anyone