The 223 Remington is one of the most popular varmint and smaller-size big-game cartridges around. (Photo/Richard Mann) The 5.56 NATO cartridge is an offshoot of the 223 Rem, not the other way around. ...
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 ...
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