And in shorter barrel lengths (~8″) the 300BLK is way outstanding for supersonics, at the very least. Long barrel 300BLK is close to pointless IMO, you can find other rounds that outperform it handily in the same System, with exact same length barrels. His proven expertise in firearm manipulation and https://300aacreloading17306.therainblog.com/36513136/top-latest-five-300-aac-reloading-urban-news