5.56×45mm NATO / .223 Remington
Image © 5.56x45mm NATO by Francis Flinch
Parent Case: .223 Remington
Metric: 5.56 x 45mm
PSI: 62,366
Info: While the 5.56x45mm and .223 Remington aren't exactly the same, they are most often used interchangeably.
Images:
Czech Republic: S&B SS109     Sellier & Bellot (Zbrojova Vlašim), 62 gr, FMJ, brass casing , headstamp "ZV 99  " lot 6/151. Belgian designed steel tip penetrator. The box is marked "20 cartridges bullet SS 109 5,56 x 45 mm NATO ZV". (© Aftermath Gun Club) |
Links:
Wiki
Gun Zone: A 5.56 X 45mm Timeline
Tags: 5.56 NATO, 5.56mm, 5.56 mm, 5.56x45mm