And in shorter barrel lengths (~eight″) the 300BLK is way top-quality for supersonics, a minimum of. Prolonged barrel 300BLK is close to pointless IMO, you could find other rounds that outperform it handily in the same System, with very same length barrels. You will need to tweak subsonic handloads based https://300-blackout-brass30639.dgbloggers.com/38991832/the-basic-principles-of-300-aac-brass