5.7x28mm Ammo

The 5.7x28mm is a small-caliber, high-velocity cartridge developed by the Belgian firearms manufacturer Fabrique Nationale (FN). It was designed in the 1980s as a replacement for the 9mm Parabellum cartridge for military and law enforcement use, with the goal of providing better armor-penetration capabilities and reduced recoil.

The 5.7x28mm cartridge fires a small, lightweight bullet weighing around 1.5 to 2.5 grams (23 to 40 grains) at high velocities, typically around 1,800 to 2,200 feet per second (fps). It is capable of producing muzzle energies of up to 400 foot-pounds (ft-lbs), which is relatively high for such a small cartridge.

The 5.7x28mm cartridge is primarily used in the FN P90 submachine gun and the FN Five-seveN pistol, which were both designed specifically to take advantage of the small size and high velocity of the cartridge. These firearms are compact and lightweight, making them well-suited for use in close-quarters combat situations.

While the 5.7x28mm cartridge is not as common as some other handgun cartridges, it has gained a following among some shooters due to its unique properties, including its high velocity and armor-penetration capabilities. It is also sometimes used for hunting small game, although it is not typically considered a cartridge suitable for larger game.

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