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  2. .280 Remington - Wikipedia

    en.wikipedia.org/wiki/.280_Remington

    In Europe the .280 Remington is not popular in bolt-action rifles since it competes directly with the 7×64mm, which is of the almost exact same size as the .280 Remington but has slightly more power, because of having a slightly higher maximum allowed chamber pressure and a slightly higher case capacity. The twist rate for the 7x64 is 1 in 8. ...

  3. .280 British - Wikipedia

    en.wikipedia.org/wiki/.280_British

    The .280 British was an experimental rimless bottlenecked intermediate rifle cartridge. It was later designated 7 mm MK1Z , and has also been known as .280/30 , .280 Enfield , 7 mm FN Short and 7×43mm .

  4. .280 Ackley Improved - Wikipedia

    en.wikipedia.org/wiki/.280_Ackley_Improved

    The .280 Ackley Improved (.280 AI) was the result of the .280 Remington case modification by P.O Ackley, who pushed out the sidewalls at the shoulder to near parallel and steepened the shoulder angle to 40 degrees in order to increase powder capacity, thus along with increasing the allowable pressure, resulted in increasing the bullet initial velocity by approximately 100 fps.

  5. .280 Ross - Wikipedia

    en.wikipedia.org/wiki/.280_Ross

    The .280 Ross, also known as the .280 Nitro, .280 Rimless Nitro Express Ross (CIP) and .280 Rimless cartridge, is an approximately 7mm bullet diameter rifle round developed in Canada by F.W. Jones as a consultant to Sir Charles Ross, 9th Baronet, and his Ross Rifle Company of Quebec, Canada for use as a Canadian military cartridge as a replacement for the .303 British, and in a civilianised ...

  6. 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]

  7. EM-2 rifle - Wikipedia

    en.wikipedia.org/wiki/EM-2_rifle

    The EM-2, also known as Rifle, No.9, Mk.1 or Janson rifle, was a British assault rifle.It was briefly adopted by British forces in 1951, but the decision was overturned very shortly thereafter by Winston Churchill's incoming government in an effort to secure NATO standardisation of small arms and ammunition.

  8. Remington Model 721 - Wikipedia

    en.wikipedia.org/wiki/Remington_Model_721

    He described it as a strong, accurate, economically produced and well received rifle at the time of its introduction. [1] Perhaps the most enduring legacy of the Model 721 is the Remington Model 700, the best-selling bolt-action rifle in history and considered to be one of the greatest centerfire hunting rifles ever produced. [6]

  9. Marlin Firearms - Wikipedia

    en.wikipedia.org/wiki/Marlin_Firearms

    Marlin Model 2000, a .22 LR bolt-action rifle, designed for competition target shooting (biathlon version available) Marlin Model MR7, a long action center fire bolt-action rifle available in .30-06, .270,and .25-06 manufactured from 1996-1999 A few were offered in .280 Remington in 1999