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270 Winchester necked down to a .243 bullet with the angle increased to 35 degrees - The 270 Winchester is a standardized cartridge of the same design as the 30-06 except the case is 1.2mm longer and necked down to the .270 caliber. Therefore, the 243 Catbird is a 6mm-06 with a 35 degree shoulder and a 1.2mm longer case. [10]
Bolt action: A type of firearm action in which the firearm's bolt is operated manually by the opening and closing of the breech with a small handle. As the handle is operated, the bolt is unlocked, the breech is opened, the spent shell casing is withdrawn and ejected, the firing pin is cocked, and a new round/shell (if available) is placed into ...
Department of the Army Supply Manual SM 9-5-1305, Stock List of Current Issue Items, Ammunition and Explosives, AMMUNITION – THROUGH 30 MILLIMETER, Federal Supply Class 1305, April 1958. U.S. War Department Training Manual TM 9-1900 Small-Arms Ammunition , September 1947.
Magnum-action cartridges, are usually rifle cartridges that are both longer and more powerful than traditional full-powered rifle long-action cartridges, with a COL between 85 and 91 mm (3.34 and 3.6 in), including some of the long-action cartridges with a case head larger than 13 mm (.50 in) diameter, which is most commonly exemplified by the ...
The .17 Remington is based on the .223 Remington case necked down to .172 in (4.37 mm), with the shoulder moved back. [5] [6]Extremely high initial velocity (over 4,000 ft/s 1,200 m/s), flat trajectory and very low recoil are the .17 Remington's primary attributes.
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 .
Starting with a .450 Bushmaster case, Remington trimmed the length to 1.525 in from the original 1.7 and necked it down to accept a conical .308 in diameter bullet with a 25-degree shoulder. [ 4 ] The rim size is .492 in and because the round generates 55,000 psi, Remington opted to use a .308 rifle bolt in a 5.56-sized rifle for increased case ...
Break-action shotguns, double rifles, and combination guns typically have an extractor that pushes out the casings when the action is flexed open. Most modern extractors are forceful enough to completely eject the casing from the gun (i.e. integrating the function of an ejector), but some require the user to manually remove spent cartridges.