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3UBR1
The 3UBR1 (RU: 3УБР1) is a Russian 23 mm (23×152B) cannon armour-piercing incendiary tracer (API-T) round. The round's ≈190 g API-T projectile, BZT (RU: БЗТ) in Russian, has a small incendiary charge is present within the nose area.
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