|Place of origin||United Kingdom|
|Manufacturer||Civil Defence Supply - UK|
|Parent cartridge||9x19mm Parabellum (originally 10mm Auto)|
The .224 BOZ cartridge was developed in the late 1990s with the purpose of defeating body armour. The .224 BOZ began as a 10mm Auto case necked down to .223. Original trials were successful, with this round firing a 50 gr projectile chronographed at over 2,500 ft/s (760 m/s). Worldwide patents were applied for and granted.
In early 1999 .224 BOZ was fired in modified 10mm MP5 and 10mm Glock taking part in a head to head trial at DERA Fort Halstead (UK Defence Testing Establishment) against the NATO CRISAT specification target of layered titanium and Kevlar armour. These trials favourably compared the .224 BOZ against the 5.7 FN P90 and the HK MP7. The .224 BOZ was also shown at the Shot Shows 1999 and 2000, but the concept was solely to be made available for anti-terrorist and special forces use, not civilian use.
In 2010 work restarted on re-working .224 BOZ into a 9x19mm necked case to .223 and with a partnership with a leading ballistics engineer a new range of projectiles have been created. Despite decreasing the cartridge case volume velocities in excess of 2,200 ft/s (670 m/s) have been achieved.
- ".224 BOZ Ammunition and Weapons Programme". Archived from the original on 4 April 2005. http://www.civil-defence.org/products/ballistics/boz224/boz224.html. Retrieved 10 October 2013.
- Guns & Ammo, November 1998, p64
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