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4.6 x 30 mm
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The 4.6 x 30 mm cartridge is a type of armor-piercing ammunition used by the H&K MP7 submachine gun and by H&K UCP pistol.
It features bottlenecked case and steel core pointed brass-jacketed bullet
Projectile weight: 1.6 g
Muzzle velocity: 725 m/s
Muzzle energy: 420 joules.
Effective range: 200 m
Test results (taken from hkpro.com)
Gelatin block at 50 m. (20 % Gelatin block 300 mm long): 280 mm
Energy Transfer through armor at 50 m 1.6 mm Titanium + 20 layers of Kevlar 220 joules
Energy Transfer through armor at 100 m 1.6 mm Titanium + 20 layers of Kevlar 115 joules
same numbers for 5.7 x 28 mm are 230 mm, 140 J and 65 J
The round was designed as a competitor to the 5.7 mm round developed by FN, but something is to said of the stopping power of the round when compared to the stopping power of the 5.7 mm. In head-to-head comparison 4.6 x 30 to 5.7 mm ammo is faster and offers slightly better long range and piercing capabilities, but lacks in shock-generating capabilities
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