And it is equally common to see ammunition in both chamberings next to each other on store shelves. But they aren’t exactly the same. Here’s how they are different and what you need to know on 5.56 vs ...

You can safely fire 223 Remington ammunition in a 5.56 NATO rifle but shooting 5.56 NATO ammo in a rifle ... If you compare the trajectory of the 224 Valkyrie vs 223 Remington with these ...

On the other hand, it’s considered unsafe to shoot 5.56 NATO ammunition in a 223 Remington rifle. You see, the 5.56 NATO cartridge will produce about 62,000 psi in a 5.56 NATO chamber, and that ...

Erring on the side of safety, you can always shoot .223 Rem. ammo in a 5.56 NATO chambered rifle, but should only shoot 5.56 NATO ammo in modern, bolt-action .223 Rem. rifles—never in .223 semi ...

The Bureau of Alcohol, Tobacco, Firearms and Explosives on Thursday raised new concerns about surplus military ammo used in popular AR-15 rifles and pistols just days after pulling back on a ...