300 blackout vs 556

The 5.56 fires 55-grain bullets about 3,100 feet-per-second (fps) and 77-grain bullets closer to 2,800 fps. The 300 Blackout, on the other hand, can be loaded with 110-grain bullets for 2,300 fps of velocity or 220-grain bullets for 1,000 fps. These radically different velocities translate to radically different trajectories. macarthur fc vs perth glory