Forgotten Weapons on MSNOpinion

How .223 and 5.56 Became the Most Confused Cartridges Ever

For most shooters the difference between .223 Remington and 5.56×45 NATO is minor, but it matters because 5.56 is typically ...
Field & Stream

223 vs 556: What’s the Difference?

Some believe the 5.56 NATO was the original military cartridge and that the 223 Remington was the civilian offshoot. That’s not the case. In 1970, NATO (North Atlantic Treaty Organization) affiliated ...