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The cartridge is a necked-up version of the .22 PPC which is in turn based on a .220 Russian (5.6×39mm). [5] The standard bullet diameter for 6 mm caliber cartridges is .243 inches (6.2 mm), the same diameter used in the .243 Winchester and 6mm Remington cartridges.
An IMR smokeless powder for reloading The Hagley Museum in Wilmington, Delaware. IMR Legendary Powders is a line of smokeless powders which are popularly used in sporting and military/police firearm cartridges. The initials 'IMR' stand for Improved Military Rifle powder. IMR powders makes a line of various types of smokeless powder suitable for ...
Stocks for long guns are not as often changed as handgun grips, but a well fitted stock can make a significant difference in accuracy. For shotguns in particular, the placement of the shooter's face on the stock provides the rear aiming point, and the correct drop, toe alignment, and cast-off can greatly enhance accuracy.
Using Rock Island Armory M1911 pistols with 5-inch barrels, Taffin conducted tests at 20 yards with four-shot groups. The best results were achieved with Hodgdon Lil' Gunpowder (10.5 grains) and Alliant 2400 powder (9.3 grains), both of which are fast-burning pistol powders designed for magnum and high-velocity applications.
This is a table of selected pistol/submachine gun and rifle/machine gun cartridges by common name. Data values are the highest found for the cartridge, and might not occur in the same load (e.g. the highest muzzle energy might not be in the same load as the highest muzzle velocity, since the bullet weights can differ between loads).
Subsequently, the case was shortened to reduce powder capacity to a volume more suited to the shorter barrel of a pistol. The resulting cartridge, the .221 Fireball , produced factory-loaded velocities of over 825 m/s (2,700 ft/s) from the short barrel, and accuracy rivaling the parent .222 Remington, one of the most accurate cartridges made.
Magnum pistol cartridges reverse this power/accuracy tradeoff by using lower-density, slower-burning powders that give high load density and a broad pressure curve. The downside is the increased recoil and muzzle blast from the high powder mass, and high muzzle pressure. Most rifle cartridges have a high load density with the appropriate powders.
The .40 Super (10.2x25mm) is a powerful automatic pistol cartridge developed through the collaboration of Fernando Coelho and Tom Burczynski and introduced by Triton Cartridge in 1996. It delivers ballistics comparable to the .41 Magnum revolver cartridge, yet functions in standard 1911s and other full-size pistols. A 5” 1911 chambered in the ...