Small arms
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57-BZT-561SM
14.5 mm 57-BZT-561SM cartridge with modernized BZT-M armor-piercing incendiary tracer bullet

The 14.5mm 57-BZT-561SM cartridge with modernized BZT-M armor-piercing incendiary tracer bullet is used in the 14.5mm Vladimirov KPVT heavy machine gun and its derivatives.

Main characteristics
Caliber, mm
14,5
Cartridge weight, g
187+3-7
Bullet weight, g
59,3–61,3
Cartridge length, mm
156-1,5
Average bullet velocity V25 at the barrel length of 1,350 mm, m/s
995-1015
Bullet dispersion R50 at 300 meters, not more than, cm
20
Tracer ignition delay distance from the muzzle, m
50-120
Range at which bullets penetrate a 20mm thick armor plate at an angle of 20 degrees from the vertical, m
100
Cartridge case material
steel