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The .17 Remington Fireball / 4.4x36mm was created in 2007 by Remington Arms Company as a response to the popular wildcat round, the .17 Mach IV.Factory loads drive a 20 grain (1.3 g) bullet around 4,000 ft/s (1,219 m/s).
Caliber/calibre: In small arms, the internal diameter of a firearm's barrel or a cartridge's bullet, usually expressed in millimeters or hundredths of an inch; in measuring rifled barrels this may be measured across the lands (.303 British) or grooves (.308 Winchester) or; a specific cartridge for which a firearm is chambered, such as .45 ACP or .357 Magnum.
A guide to the recoil from the cartridge, and an indicator of bullet penetration potential. The .30-06 Springfield (at 2.064 lbf-s) is considered the upper limit for tolerable recoil for inexperienced rifle shooters. [2] Chg: Propellant charge, in grains; Dia: Bullet diameter, in inches; BC: Ballistic coefficient, G1 model; L: Case length (mm)
A speed load is quite similar to a regular reload of a weapon, but when well performed can afford a large speed advantage. With closed bolt weapons, the speed advantage is lost if they do not have a round in the chamber, as the gun will then require cocking with the new magazine inserted to chamber the first round.
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 ...
The case capacity of different cartridge brands of a particular chambering can significantly vary between cartridge case manufacturers and even production lots. The default database of QuickLOAD for example contains 5 different .300 Winchester Magnum case capacities for 5 different cartridge case manufacturers.
Case-hardening or carburization is the process of introducing carbon to the surface of a low-carbon iron, or more commonly a low-carbon steel object, in order to harden the surface. Iron which has a carbon content greater than ~0.02% is known as steel .
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.