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 ...

The gunman at Sandy Hook Elementary School allegedly used a .223 caliber rifle. This is one example of a gun that uses this caliber. Update 9:50am, December 17, 2012: The New York Times reports that ...

Some cartridge comparisons like the “308 vs 556” can seem ridiculous because the two cartridges are so different in size, power, and performance. However, both cartridges have a military lineage, and ...