Information Compiled and Mirrored from Nammo

12,7 mm Ammunition Family Recent modifications to the 12,7 mm machine gun system have made it considerably more effective as an offensive and defensive weapon system. For example, the new "softmount" dramatically increases the accuracy with less than 18 kg of added weight. Furthermore, the new family of Multipurpose and Armour Piercing rounds (originally designed for the .50 cal M2 machine gun) have a unique penetration and incendiary effects. This gives the overall gun system the equivalent firing power of a 20 mm projectile to include such targets as helicopters, aircrafts, light armour vehicles, ships and light fortifications. Product information 12,7 mm MP NM140 12,7 mm MP-T NM160 12,7 mm AP-S NM173 12.7 mm All three rounds have the same weight and ballistic performance. Therefore they can be linked together with no adverse effect on the ballistic. Furthermore the rounds can be delivered in the extremely accurate Grade A configuration, making each an excellent choice as a sniper round. Performance Data   MP NM140 MP-T NM160 AP-S NM173 Penetration 11 mm Armour in 45o at 1000 m 11 mm Armour in 45o at 1000 m 11 mm Armour in 30o NATO at 1500 m Fragmentation Approx. 20 effective fragments after hitting 2 mm Dural Approx. 20 effective fragments after hitting 2 mm Dural _ Incendiary effect Ignition of JP4 and JP8 ammunition Ignition of JP4 and JP8 ammunition _ Accuracy Grade A At 550 m (Mean radius) < 15 cm < 25 cm < 15 cm Tracer _ Red tracer 50 – 1500 m _ Safety All types are safe in transport, storage and handling. Drop test from 15 m with safe firing after drop. Comply with requirements in NATO standards and Stanag for 12.7 mm. TECHNICAL DATA Description: 12,7 mm x 99 MP NM140 (US nom. Mk211 Mod 0) 12,7 mm x 99 MP-T NM160 12,7 mm x 99 AP-S NM173 Cartridge length: 138,43 max Projectile diameter: 12,98 Projectile weight: 43-47 g Muzzle velocity: Approx. 915 m/s (Browning M2) The ammunition can be used in all standard 12,7 mm (.50 cal) weapons like Browning M2 and M3, M3P, sniper rifles similar to Barrett M82A1 and can also be with changed cartridge case used in 12,7 x 107 weapons. Target consisting of an initial plate of 2 mm Dural wth witness screens of 2 mm Al with airspace 0,4 m. Fragmentation screen in rear of 1,25 mm mild steel placed 2 m behind the initial plate Standard US 12,7 mm API-M8 gives only one hole through all plates. MP is functioning about 20 - 30 cm inside the target giving approximate 20 fragments through the 1,25 mm steel plate.

Adobe PDF Showing Nammo Raufoss Testing Facility

Last Modified on January 12, 2000
aalbert@biggerhammer.net