Two of the most popular cartridges today are nearly identical and sometimes considered transposable, but when looking at 5.56 vs .223, there are some key differences. The .223 Remington started as a ...

For decades the U.S. military’s rifles and machine guns have chambered either 5.56mm or 7.62mm rounds. Now, the Army’s newest weapons are being tested to fire a new caliber bullet that’s faster and ...

Army Chief of Staff Gen. Mark Milley told senators Thursday that the Army has developed a round that can penetrate 5.56 mm-resistant body armor. During a Senate Armed Services Committee hearing on the ...