Stiletto Systems’ range of armour-piercing (AP) ammunition is in use with the Ukrainian Special Forces operating in the Donbass region and has completed several NATO-standard test programmes.
Test centres have included the Royal Military Academy (École royale militaire) in Belgium, which concluded in 2014 that Stiletto ammunition is capable of achieving the same effect as FN P80 and CBC AP ammunition, but requires a much lower muzzle velocity of 334.7 m/s, whereas the FN P80 and CBC AP require 959 m/s and 928 m/s, respectively.
Further work has been conducted at Cranfield University in the United Kingdom. Those tests concluded that the 13 g and 14 g projectiles provided by Stiletto would be able to penetrate 15 mm and 17 mm of HARDOX 450 steel hardened to 454 HBW at 208 m and 164 m, respectively. Stiletto’s chief engineer, Alexandr Kalachev, said that the projectiles maintained their sharpness after penetrating the armour.
The latest tests were conducted in 2017 by the Ukrainian Central Research Institute of Armament and Military Hardware and saw Stiletto ammunition in 7.62x53.3 mm (WSM .300) and 5.45x39 mm calibres compared with 12.7x108 mm BZT-44 and 7.62x54 mm B-32. The target for the BZT-44, an AP round, was a 20.5 mm-thick ARMSTAL 500 armoured plate. The B-32 was tested against a 14 mm-thick sheet of ARMOX 500. The BZT-44 round was left stuck in the 20.5 mm plate, whereas the Stiletto 7.62 mm round achieved complete penetration. The B-32 failed to penetrate the 14 mm plate, while the 5.45 mm round from Stiletto fully pierced the plate. All of the tests were conducted with a range of 220 m.
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