6.8 mm Remington SPC

from Wikipedia, the free encyclopedia
6.8 mm Remington SPC
6.8SPC.jpg
6.8 mm SPC (left), 5.56 × 45 mm NATO right, next to them the two projectiles
general information
caliber 6.8 x 43 mm
Sleeve shape rimless bottle neck sleeve
Dimensions
Sleeve shoulder ⌀ 10.21 mm
Sleeve neck ⌀ 7.57 mm
Floor ⌀ 7.04 mm
Cartridge bottom ⌀ 10.72 mm
Sleeve length 42.57 mm
Cartridge length 58.8 mm
Weights
Bullet weight 5.5–7.78 g
(85–120 grain )
Technical specifications
Speed ​​v 0 750-940 m / s
Bullet energy E 0 2068-2410 J.
Lists on the subject

The 6.8 mm Remington SPC (6.8 × 43 mm) is a medium cartridge that was originally developed for the US SOCOM in 2002 . It represents a compromise between the 5.56 × 45 mm NATO and the 7.62 × 51 mm NATO cartridge. The commercial launch took place in 2004.

overview

The ballistic data is similar to that of the older .280 British , due to a higher quality powder charge, the 6.8 SPC (Special Purpose Cartridge) gets by with a smaller case. The 6.8 SPC reaches a muzzle velocity of 790 meters per second with a 406 mm barrel and a standard charge of 7.45 g (115 grains ) . The projectiles have the same diameter of 0.277 inches as that of the widely used hunting ammunition .270 Winchester , which enables them to be used for hunting. However, the .270 Winchester usually has a stronger propellant charge.

5.56 mm NATO rifles can be converted to the new caliber with a few modifications ( barrel , firing pin , magazine ). The US Army Marksmanship Unit contributed to the development, Barrett Firearms Manufacturing, Inc produced the modified parts for the M16 , the Barrett REC7 . Although the main focus was on increased lethality , the 6.8 SPC also has better ballistic properties and thus increased accuracy.

power

Originally intended for use in special units of the US armed forces , the cartridge was soon praised for its increased accuracy, better target ballistics and (compared to the 5.56 mm NATO) the ability to penetrate concrete blocks.

The stronger and heavier 7.62mm NATO cartridge is the 6.8mm Rem. Inferior to SPC in most respects. Their recoil is less, which makes the weapon more controllable. Similar to the 5.56 NATO, the projectile tends to shatter when hit from close and medium range, which in particular leads to greater injuries and damage to the body.

Conclusion

The main advantage of the 6.8 mm cartridge over the 5.56 × 45 mm NATO lies in the significantly higher target ballistics. The main point of criticism remains the inferior performance of the 7.62 × 51 mm cartridge at distances over 365 m, especially when compared to the competing 6.5 mm Grendel cartridge.

weapons

Individual evidence

  1. ↑ 6.8 mm SPC History and Development (accessed July 4, 2009)
  2. ↑ Rifle Shooter Mag - The 6.8mm Remington SPC

Web links

Commons : 6.8mm Remington SPC  - collection of pictures, videos and audio files