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 ...
Yahoo

5.56 vs .223: What’s the Real Difference Between These Popular Cartridges?

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 ...
Field & Stream

223 vs 556: What’s the Difference?

When it comes to the 223 vs 556, it’s not so much about which one is best, but about the differences between them. The 223 Remington and 5.56 NATO cartridges have identical case dimensions but are not ...