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Most rifle cartridges have a high load density with the appropriate powders. Rifle cartridges tend to be bottlenecked, with a wide base narrowing down to a smaller diameter, to hold a light, high-velocity bullet. These cases are designed to hold a large charge of low-density powder, for an even broader pressure curve than a magnum pistol cartridge.
Machine guns are typically fired in short bursts to preserve ammunition and barrel life, reserving long strings of fire for emergencies. Sustained rate-of-fire also applies to box magazine fed assault rifles and semi-automatic rifles, although these weapons rarely expend ammunition at the same rate as light machine guns.
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.
In some instances, the powder may not have even been fully burned in guns with short barrels. So, the muzzle velocity of a 2-inch (51 mm) barrel is less than that of a 4-inch (100 mm) barrel, which is less than that of a 6-inch (150 mm) barrel. Large naval guns will have high length-to-diameter ratios, ranging between 38:1 to 50:1. This length ...
Components of a modern bottleneck rifle cartridge. Top-to-bottom: Copper-jacketed bullet, smokeless powder granules, rimless brass case, Boxer primer.. Handloading, or reloading, is the practice of making firearm cartridges by manually assembling the individual components (metallic/polymer case, primer, propellant and projectile), rather than purchasing mass-assembled, factory-loaded ...
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The widespread availability of standard-size Mauser 98 rifles in central Europe and the fact that the .375 H&H Magnum cartridge and its necked-down version the .300 H&H Magnum with approximately 72.4 mm case length and 91.4 mm (3.60 in) overall length were too long to fit in standard-sized Mauser 98 bolt-action rifles made the shorter 9.3×64mm ...
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