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The Raufoss Mk 211 is a .50 BMG (12.7×99mm NATO) multi-purpose anti-materiel high-explosive incendiary/armor-piercing ammunition projectile produced by Nammo under the model name NM140 MP. [1] It is commonly referred to as multipurpose or Raufoss, meaning red waterfall in Norwegian. This refers to Nammo's precursor company Raufoss ...
Raufoss Mk 211. High-explosive incendiary/armor-piercing ammunition (HEIAP) is a form of shell which combines armor-piercing capability and a high-explosive effect. In this respect it is a modern version of an armor-piercing shell. The ammunition may also be called semi-armor-piercing high-explosive incendiary (SAPHEI). [1]
The "Mk 211" name comes from the nomenclature "Mk 211 Mod 0" used by the U.S. military for this round. [ 3 ] [ 4 ] The multipurpose name is based on the projectile having an armor-piercing ( tungsten core), an explosive , and an incendiary component, thus making it capable of penetrating lightly armored targets and causing damage to personnel ...
Cartridge, caliber .50, armor-piercing incendiary tracer (API-T), Mk 300 Mod 0 as with the Mk 211 Mod 0, but with a tracer component. This cartridge likely can be used in any .50 caliber weapon in the US inventory with the exception of the M85 machine gun, as with the Mk 211 Mod 0. Cartridge, caliber .50, armor-piercing explosive incendiary ...
2,100 ft/s (640 m/s) (reduced charge) Effective firing range. 23,900 yd (21,900 m) at 15° elevation. The 12"/50 caliber Mark 7 gun (spoken "twelve-inch-fifty-caliber") was a United States Navy 's naval gun that first entered service in 1912. Initially designed for use with the Wyoming class of dreadnought battleships, the Mark 7 also armed the ...
The headstamp on the casing can also help to identify the round as Raufoss and some common headstamps include: HXP89, WCC94 & FN91; or HXP, WCC or FN with different 2-digit numbers as production year suffixes. The US military refers to this round as the " MK211 Mod 0" .50 BMG cartridge. The linked, grade B version of this ammo is Mod 1.
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Work on this design began in 1935 and production commenced in 1943. 1.9 meters long, the bomb is an armor-piercing design, with a thick forged steel nose. The bomb attained a speed of about 100 meters per second when launched. The principal drawback was the small 3.5-kilogram bursting charge. Type 5 No.1 Mk 9 Mod 1 15 kg (33 lb)