From TheBestLinks.com
The 10 mm Norma pistol cartridge is the child of the famous firearms expert Jeff Cooper. It was supposed to be a medium velocity pistol cartridge with more stopping power than the 9 mm Luger cartridge and better ballistics then the .45 ACP.
When Norma designed the cartridge with help of Dornaus & Dixon for the Bren Ten pistol, they decided to increase the power of Jeff Cooper's idea. The resulting 10 mm Norma pistol cartridge is very powerful, and combines very good ballistics with excellent stopping power. The 10 mm Norma cartridge is much more accurate than the 9mm Luger and proportionate to its size more accurate than a .22 LR cartridge.
However the 10 mm Norma cartridge turned out to be too powerful to be used by most people, even the FBI which adopted it. Thus the FBI started using lowered charge versions which have a level of performance similar to the .40 S&W cartridge. Another drawback of the 10 mm Norma is the too high "One Shot Kill" level with expanding bullets, a level of performance which far exceeded its design goal of "One Shot Stop".
Today the 10 mm Norma cartridge is being mainly used to fend off medium sized dangerous animals, or for hunting.
The 10 mm Norma is also known as: 10 mm
Muzzle Velocity:
- 10.9 g (170 gr) full metal jacket: 405 m/s (1330 ft/s)
- 12.9 g (200 gr) full metal jacket: 360 m/s (1180 ft/s)
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