I vote for the 14.5x114mm KPV HMG round!! B-32 - Armor-piercing incendiary full metal jacket round with a tungsten-carbide core. Projectile weight is 64.4 g and muzzle velocity is 976 m/s. Armour penetration at 500 m is 32 mm of rolled homogeneous armour (RHA) at 0 degrees.
BZT - Armor-piercing incendiary tracer full metal jacket round with a steel core. Projectile weight is 59.56 g and muzzle velocity is 1,005 m/s. Tracer burns to at least 2,000 m.
MDZ - High-explosive incendiary bullet of instant action. Projectile weight is 59.68 g.
Rounds are also produced by Bulgaria, China, Egypt, Poland, and Romania.
Answer is off topic!!!!
