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  2. .223 Winchester Super Short Magnum - Wikipedia

    en.wikipedia.org/wiki/.223_Winchester_Super...

    The .223 WSSM was introduced in 2003 by the Browning Arms Company, Winchester Ammunition, and Winchester Repeating Arms Company. The .223 designation is a reference to the popular .223 Remington. It is currently the fastest production .22 caliber round in the world with muzzle velocities as high as 4,600 feet per second (1,402 meters per second).

  3. List of AR platform cartridges - Wikipedia

    en.wikipedia.org/wiki/List_of_AR_platform_cartridges

    The AR-15 rifle usually comes chambered for either the military cartridge 5.56×45mm or the .223 Remington. Because of the pressures associated with the 5.56×45mm, it is not advisable to fire 5.56×45mm rounds in an AR-15 marked as .223 Remington, since this can result in damage to the rifle or injury to the shooter. [1]

  4. .223 Remington - Wikipedia

    en.wikipedia.org/wiki/.223_Remington

    The .223 Remington (designated 223 Remington by SAAMI [4] and 223 Rem. by the C.I.P., [5] pronounced "two-twenty three") is a rimless, bottlenecked, centerfire intermediate cartridge. It was developed in 1957 by Remington Arms and Fairchild Industries for the U.S. Continental Army Command of the United States Army as part of a project to create ...

  5. List of military headstamps - Wikipedia

    en.wikipedia.org/wiki/List_of_military_headstamps

    Early ammunition had a 4-digit year with the first 2 digits (thousands and hundreds) at 9 o'clock and the second 2 digits (tens and ones) at 3 o'clock. Ammunition with an E at the 12 o'clock position (which stands for Ersättning, or "Substitute") have a bimetallic cartridge-case (brass-clad steel) due to wartime economy measures during World ...

  6. 6×45mm - Wikipedia

    en.wikipedia.org/wiki/6×45mm

    Since the cartridge was never commercially adopted by an ammunition manufacturer, it has remained a wildcat cartridge since its inception. However, making cases from existing .223 Remington brass is as simple as running the case through a 6×45mm die. The availability of .223 cases, the ease of forming, and the light powder charge make for a ...

  7. 5.56×45mm NATO - Wikipedia

    en.wikipedia.org/wiki/5.56×45mm_NATO

    Firing a 5.56×45mm NATO round out of a rifle chambered in .223 Remington could be injurious or fatal to the user as well as the gun, however .223 Remington ammunition can be fired safely from almost any rifle chambered in 5.56×45mm NATO as the NATO specified rifles can handle much higher chamber pressures than the .223 Remington is capable of ...

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  9. Peters Cartridge Company - Wikipedia

    en.wikipedia.org/wiki/Peters_Cartridge_Company

    With the approach of World War I the company received large ammunition orders from the Russian Empire and from the United Kingdom of Great Britain and Ireland. Bullet manufacturing building R-6 was built of brick; and money from wartime contracts was used to replace most of the old wooden framed buildings with brick and reinforced concrete ...