Back 6.8 mm Remington SPC Catalan 6,8 mm Remington SPC Czech 6,8 mm Remington SPC German 6,8 mm Remington SPC Spanish 6,8 mm Remington SPC French 6,8 mm Remington SPC ID 6,8 mm Remington SPC Italian 6.8×43mm SPC Japanese 6,8 mm Remington SPC NB Nabój 6,8 × 43 mm Remington SPC Polish

6.8mm Remington SPC

6.8×43mm Remington SPC
6.8 SPC (left), 5.56×45mm NATO (right)
Place of originUnited States
Production history
DesignerRemington Arms, USSOCOM
Designed2002–2004
Specifications
Parent case.30 Remington
Case typeRimless, bottlenecked
Bullet diameter0.277 in (7.0 mm)
Land diameter0.270 in (6.9 mm)[1]
Neck diameter0.306 in (7.8 mm)
Shoulder diameter0.402 in (10.2 mm)
Base diameter0.422 in (10.7 mm)[1]
Rim diameter0.422 in (10.7 mm)
Rim thickness0.049 in (1.2 mm)
Case length1.687 in (42.8 mm)[1]
Overall length2.260 in (57.4 mm)
Case capacity34.8–36.9 gr H2O (2.26–2.39 cm3)
Primer typeLarge Rifle
Maximum pressure (C.I.P)58,700 psi (405 MPa)
Maximum pressure (SAAMI)55,000 psi (380 MPa)
Ballistic performance
Bullet mass/type Velocity Energy
7.45 g (115 gr) Full Metal Jacket 2,575 ft/s (785 m/s) 1,694 ft⋅lbf (2,297 J)
7.78 g (120 gr) SST 2,460 ft/s (750 m/s) 1,612 ft⋅lbf (2,186 J)
7.1 g (110 gr) Sierra Pro Hunter 2,500 ft/s (760 m/s) 1,525 ft⋅lbf (2,068 J)
5.5 g (85 gr) Barnes TSX with "tactical" factory SSA load 3,070 ft/s (940 m/s) 1,780 ft⋅lbf (2,410 J)
Test barrel length: 410 mm (16 in) [2][3][4]
Source(s): [5]

The 6.8mm Remington Special Purpose Cartridge (6.8 SPC, 6.8 SPC II or 6.8×43mm) is a rimless bottlenecked intermediate rifle cartridge that was developed by Remington Arms in collaboration with members of the U.S. Army Marksmanship Unit and United States Special Operations Command[6] to possibly replace the 5.56 NATO cartridge in short barreled rifles (SBR) and carbines. Based on the .30 Remington cartridge,[7] it is midway between the 5.56×45mm NATO and 7.62×51mm NATO in bore diameter. It uses the same diameter bullet (usually not the same mass) as the .270 Winchester hunting cartridge.

  1. ^ a b c "C.I.P. TDCC sheet 6,8 Rem. SPC" (PDF). Archived (PDF) from the original on 2018-04-13. Retrieved 2022-02-06.
  2. ^ "Silver State Armory specializes in 6.8 SPC Ammunition, 115gr OTM, and custom brass cases – 6.8 Ammunition, 6.8 SPC Ammunition, SSarmory.com, SilverStateArmory.com". Ssarmory.com. Archived from the original on 2011-10-28. Retrieved 2011-09-15.
  3. ^ "Hornady Manufacturing Company :: Ammunition :: Rifle :: Choose by Caliber :: 6.8mm SPC :: 6.8mm SPC 120 GR SST®". Hornady.com. Archived from the original on 2011-09-29. Retrieved 2011-09-15.
  4. ^ "6.8 SPC 110 grain Sierra Pro Hunter Ammunition, 20 rounds/box., SilverStateArmory.com". Ssarmory.com. Archived from the original on 2012-05-22. Retrieved 2012-05-26.
  5. ^ "Not So Special: A Critical View of the 6.8mm SPC -". 4 April 2015.
  6. ^ Not a private endeavor or fully sanctioned government project
  7. ^ "30 Rem". Chuckhawks.com. Retrieved 2011-09-15.