9mm Luger and 9mm NATO are two different cartridges, but they are very similar in size and performance. Here are the main differences between the two:
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Origin: 9mm Luger is a German-designed cartridge introduced in 1902. 9mm NATO, on the other hand, is a variant of the 9mm Luger cartridge adopted by NATO forces in the 1950s.
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Pressure: 9mm Luger has a maximum pressure of around 35,000 psi (pounds per square inch), while 9mm NATO has a higher maximum pressure of around 36,500 psi. This means that 9mm NATO is loaded to slightly higher pressures than 9mm Luger.
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Bullet Weight: The most common bullet weight for 9mm Luger is 115 grains, while 9mm NATO typically uses a slightly heavier 124 grain bullet.
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Velocity: Because of the heavier bullet, 9mm NATO generally has a slightly lower velocity than 9mm Luger. However, the difference in velocity is usually negligible.
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Use: 9mm Luger is a popular cartridge for civilians and law enforcement, while military forces primarily use 9mm NATO.
In summary, 9mm ammo and 9mm NATO are very similar cartridges, with 9mm NATO being loaded to slightly higher pressures and using a slightly heavier bullet. However, they can generally be used interchangeably in firearms designed to handle either cartridge.
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