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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America’s new rifle breaks the old 5.56 limit

The U.S. Army is replacing the M4 and M249 after decades of 5.56 firepower proved too weak against modern body armor. The XM7 ...
It's time to weigh in. Literally and figuratively.
The 5.56 NATO cartridge was developed during FN’s work on a light machine gun and standardized by NATO in 1979. It’s essentially a 223 Remington cartridge that’s loaded to higher pressures. You could ...
This post may contain links from our sponsors and affiliates, and Flywheel Publishing may receive compensation for actions taken through them. Modern militaries constantly pursue lighter materials, ...