Magtech 300 BLK 123gr FMJ 50rd Box

Magtech's 123gr full metal jacket load is the supersonic side of 300 Blackout, sold in a 50rd box. The 123gr weight is the standard supersonic bullet for the cartridge and runs at about 2230 fps from the muzzle, so it cycles a 300 BLK AR-15 reliably and shoots flatter than heavy subsonic loads.

Use it for drills, zeroing and general range work. The FMJ bullet will not expand, and the jacket keeps bore fouling down over a long day of shooting. A good pick for anyone who wants a steady practice load for a short barrel 300 BLK build or a suppressed host before moving to a heavier or expanding bullet.