6.8 Millimeter Ammunition - Production will take place at the Lake City Army Munitions Plant, the only government-owned, contractor-operated small-caliber ammunition production facility in the United States. Projections include Winchester's $8 billion deal to launch the Lake City facility. The Municipality of Winchester took over the Lake City operation in late 2020.
The NGSW program was designed to replace the M4 Carbine, M249 SAW and M240 Machine Gun in 5.56×45 and 7.62×51 rounds. Two gun manufacturers, True Velocity (formerly LoneStar Future Gun, Geral Dynamics) and Sig Sauer participated in the program. Other defense companies (Textron Systems, FN-America and PCP Tactical) were excluded from the program between September 2019 and November 2021. The program is expected to cost $10 million in the first year and $150 million in the second year.
6.8 Millimeter Ammunition
Various weapons were evaluated for the US Army's NGSW-R program: SIG Sauer's MG6.8 and MCX SPEAR, Geral Dynamics' RM277 and AAI/Textron Systems' NGSWR-R. The contract awarded to Winchester required analysis of munitions, production facilities and capacity planning (Image credit: Nicholas Drummond's Twitter account).
Mm Cartridge: What Is Behind The Numbers?
The NGSW program began in 2017 when the US Congress began testing the effectiveness of the M4 and 5.56×45mm NATO rounds. They concluded that the M4 Carbine remained the Army's preferred choice and performed well under pressure. Fixed issues with different shot types and magazine feeding. However, the M4 penetrates the bulletproof vests used by Russian and Chinese fighters, especially at long ranges. The plan also draws on the experience of the US military in the Middle East, where guerrillas use weapons with larger projectiles and higher effective ranges, such as AKMs. So, Congress began replacing the M4.
T929 Heavy Attack Helicopter Project Assembly Line 6.8mm Remington Special Purpose Cartridge (6.8 SPC, 6.8 SPC II or 6.8×43mm) - Remington Arms Company in conjunction with members of the US Army Marksman Corps and US Special Operations Commands.
The 5.56 NATO cartridge can be used interchangeably in short barreled rifles (SBRs) and carbines. Based on the .30 Remington cartridge,
Barrel sizes range from 5.56×45mm NATO to 7.62×51mm NATO. It uses the same diameter bullet (often a different mass) as the .270 Winchester hunting cartridge.
Patriot Combat Cartridge (6.5 Pcc) Review
The 6.8mm SPC cartridge was designed to overcome the terminal ballistic deficiencies of the 5.56×45mm NATO cartridge, currently in service with the armed forces of all NATO allies.
The cartridge is the result of an improved cartridge program. The 6.8 SPC (6.8×43mm) was originally developed by US Army Marksman Corps Master Sergeants Steve Holland and Chris Murray.
The 5.56 NATO/.223 provides better close range lethality than the Remington, with minimal loss of magazine capacity and significant increase in recoil in an M16 style service rifle.
The program began the design using the .30 Remington cartridge case, which was modified to fit the magazine that would fit into the magazine wells of the M16 series rifles and carbines currently in service with the United States Armed Forces.
Comparing Bullets: 5.56x45mm Vs 6.8x43mm
In tests comparing different caliber bullets, the .30 Remington parts box, Holland and Murray found that the 6.5 mm caliber projectile had the best accuracy and penetration, historical data dating back decades of external and terminal ballistics testing by the US military, but the 7 mm. project has the best performance. The combination of steel, charge and projection is lighter than the 7.62×39mm and 5.45×39mm Soviet cartridges, and the new cartridge is found to have a muzzle velocity of 7.62 x 39.
The 6.8mm Remington SPC was designed to perform better in a short-barreled CQB rifle as the 5.56 NATO lost performance, and was converted from the M16A4 rifle configuration to the M4 carbine. The 6.8 SPC delivers 44% more power at 100–300 m (330–980 lb) than the 5.56 mm NATO (M4 configuration). The 6.8mm SPK is not ballistically equivalent to the 7.62×51mm NATO cartridge, but it has less handling, is easier to control during rapid fire, and is lighter, allowing the operator to carry more rounds. with larger caliber bullets. A 6.8mm 7.5g (115g) bullet produces about 2,385 Joules (1,759 ft) of energy. By comparison, the 5.56×45mm bullet (which the 6.8 was designed to replace) produces about 1,796 joules (1,325 J) with a 4.0 gram (62 g) bullet, giving the 6.8mm a terminal ballistic advantage of 588 J over the 5.56mm. . (434 feet). A critical feature of this cartridge is that it is designed for short rifle carbine long guns, which are longer than standard rifles (typically 41 cm (16 in)). For every 4 mm increase in barrel length from a standard 410 mm (16 in) barrel (other things being equal), there is no increase or decrease in accuracy until the barrel length is approximately 560–610 mm (22–24 in). It is also suitable for guns with barrels smaller than 410 mm. During proper development (between 2008 and 2012), ammunition manufacturer Silver State Armory LLC (SSA) and a few other custom rifle builders used and engineered the correct chamber and barrel specifications. 6.8mm Remington SPC cartridges weigh between 16.8 and 17.6 grams (259 and 272 grams), depending on manufacturer and load. Also, more specifically, LWRC, Magpul and Alliant Techsystems (ATK) have introduced a new AR-15 designed for the 6.8 SPC, which features 6.8 Magpul P-mags and an overall magazine length of 5.9 cm (2.32). The Personal Defense Weapon (PDW) SPC II w 1:250mm (10in) twist called the "Six8" can use current 6.8 SPC factory ammunition.
Typical ballistic data from a carbine where drop and velocity are calculated with the zero point at 91 m (100 yd) at sea level.
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Spc [the Complete Guide]
By the end of 2004, the 6.8×43mm SPK will perform well in special operations against the US military.
However, the cartridge is not used by regular US military personnel. It was not widely used due to official opposition.
The 6.8 SPC was designed for terminal effectiveness in short urban warfare in Iraq. As the war in Afghanistan escalated, the fighting began to take place at longer distances, and the 6.8 SPK began to deteriorate. Studies have shown that the relatively short 6.8mm round is ineffective at long ranges.
In 2007, both US Special Operations Command and the US Marine Corps decided not to issue the 6.8 mm weapon due to logistical and cost concerns.
Monolitické Střely Hasler Ariete Ráže 6,8 Mm (.277), 112grs
Although there have been many rumors of the cartridge being evaluated by several major federal and local law enforcement agencies, the US Drug Enforcement Administration has authorized individual law enforcement agencies to purchase the M6A2 D-DEA as an authorized replacement for the 6.8mm Remington SPK. their weapons. In 2010, Jordanian state-owned arms manufacturer KADDB announced that they would be producing 6.8mm rifles and carbines for the Jordanian Army.
There is also an agreement between LWRC, Magpul, Alliant Techsystems and the Saudi Royal Guard for approximately 36,000 Six8 PDWs and an unspecified quantity of ATK/Federal XD68GD (90gr gold point "training" bullets) and LWRC Six8 for the Magpul 6.8 Pmag.
The first major manufacturer to offer an AR-15 version chambered in 6.8mm Remington SPC was the Barrett Firearms Company, which introduced the Barrett M468 and later the REC7. By 2007, most manufacturers of AR-15-style rifles for the civilian firearms market offered them in this caliber. Special sets of AR receivers are manufactured by several small companies, including Daniel Defse. Ruger Firearms no longer manufactures the 6.8mm for the Ruger SR-556 piston AR-15 model.
Stag Arms Hunter and Tactical models use a new pressure chamber (SPC II) in the upper left hand receiver to accommodate high pressure loads. Rock River Arms has LAR-6.8 X series rifles and stocks. Microtech Small Arms Research has provided their Steyr AUG version 6.8. Robinson Armament Co. The 6.8 offers the XCR-L, which is easily convertible between the 6.8, 5.56 and 7.62×39. As of October 2018, Bushmaster has brought the 6.8 SPC II conversion kit to market. Ruger Firearms has used the Mini-14 ranch rifle in this round for several years; SIG Weapons has produced and delivered 825,000 rounds of 6.8x51mm composite ammunition.
Different Types Of Bullets & Their Uses
Last month, SIG Combat delivered 825,000 rounds of composite 6.8x51mm ammunition to the U.S. Army for testing of the Next Generation Squad 2 Prototype. This is in addition to the initial submissions that are part of the program
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