And in shorter barrel lengths (~eight″) the 300BLK is way remarkable for supersonics, at least. Extensive barrel 300BLK is close to pointless IMO, yow will discover other rounds that outperform it handily in precisely the same System, with exact size barrels. The aac-sd with 110gr Sierra varmint bullets will shoot https://gustavew924akw0.wikigop.com/user