The 5.56 NATO is a higher pressure military derivative of the 223 Remington. The cartridge has been around since about 1979, and due to the availability of military surplus ammunition, it has become a ...
The 300 Blackout. Everything that is old is new again. Originally designed by JD Jones of SSK and called the 300 Whisper, this unique cartridge now generally called the 300 Blackout allows one weapon ...