FN 5.7×28mm
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The FN 5.7×28mm is a small-caliber, high-velocity, smokeless-powder, rebated, non-tapered, bottleneck, centerfire cartridge designed for pistols and personal defense weapons uses, manufactured by FN H
5.7×28mm sporting cartridges. From left to right: SS195LF, SS196SR, and SS197SR.
5.7×28mm SS196SR next to a U.S. quarter-dollar coin and a ruler
From left to right: 9×19mm Parabellum, .40 S&W, .45 ACP, 5.7×28mm, 5.56×45mm NATO, .300 Winchester Magnum, with 2.75-and-3-inch (70 and 76 mm) 12 gauge shotgun shells
The 5.7×28mm cartridge next to similarly sized cartridges, from left to right: 4.6×30mm, 5.7×28mm, .30 Carbine
HK 4.6×30mm
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The HK 4.6×30mm cartridge is a small-caliber, high-velocity, smokeless powder, rebated, bottleneck, centerfire cartridge designed for personal defense weapons developed by German armament manufacturer
FN 5.7×28mm
…In 2002 and 2003, NATO conducted a series of tests to find a replacement. The tests compared the relative merits of the 5.7×28mm cartridge and the 4.6×30mm cartridge, which was created by Heckler & Koch as a competitor to the 5.7×28mm. The NATO group subsequently recommended the 5.7×28mm cartridge, citing…
4,6 x 30