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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.
List of rifle cartridges, by primer type, calibre and name. ... 6.8x51mm Common Cartridge; 6.8mm Remington SPC; 6.8 Western; 7 mm–8 mm. 7mm BR Remington;
The .277 Wolverine will never replace larger high-power cartridges such as the .308 Winchester (7.62×51mm NATO) or .270 Winchester for long range shooting; however – it outperforms the .223 Remington at typical hunting ranges and approaches the 6.8 SPC while using less expensive components (brass, magazines, bolt, less powder per load).
Number of manufacturers producing complete cartridges - e.g. Norma, RWS, Hornady, Winchester, Federal, Remington, Sellier & Bellot, Prvi Partizan. May be none for obsolete and wildcat cartridges. H/R: Handgun (H) or rifle (R) - dominant usage of the cartridge (although several dual-purpose cartridges exist) Size: Metric size - may not be official
In addition, the REC7 uses the new 6.8mm Remington SPC (6.8×43mm) cartridge, a round that is of roughly equivalent length to 5.56×45mm NATO ammunition, so it is compatible with a standard-size lower receiver currently in use by the United States military. The REC7 uses a short-stroke gas piston designed by Barrett. It rides above the barrel ...
It is the parent case for the 6.8mm Remington SPC, [1] which is in turn the parent case for the .224 Valkyrie. The .30 Remington, along with the 25 Remington, .32 Remington. and .35 Remington were created for use in the Remington Model 8 rifle, to compete against the .25-35 Winchester, .30-30 Winchester and .32 Winchester Special.
The rebated rim dimensions exactly match the 6.8mm Remington SPC case, allowing the use of the 6.8mm SPC bolt-face of an AR-15, but the case has a base diameter of .4400" and cannot be reformed from any other existing case. The 400 LGND uses .4005" jacketed rifle bullets. 450 Bushmaster, Uses .284 Winchester cases. Cut the length to 1.700" to ...
The designation of M468 stands for an M4 carbine chambered for the 6.8mm SPC cartridge. It was an attempt to create an optimal Special Operations close-to-medium range carbine for Close Quarter Battle (CQB). A 12-inch barreled micro-carbine and 16-inch barreled carbine version were created. Barrett ceased manufacturing the rifle in 2010. [4]