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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 primary purpose of using a cartridge is to offer a handy pre-assembled "all-in-one" package that is convenient to handle and transport, easily loaded into the breech (rear end) of the barrel, as well as preventing potential propellant loss, contamination or degradation from moisture and the elements.
An old .38-40 Winchester sample. It is unclear why this cartridge was introduced, as it is very similar to the .44-40 from which it was derived. It has approximately 110 ft⋅lbf (150 J) less muzzle energy, and has a muzzle velocity about 110 ft/s (34 m/s) less than the .44-40.
The size of the lead shot that is produced is determined by the diameter of the orifice used to drip the lead, ranging from approximately 0.018 inches (0.46 mm) for #9 lead shot to about 0.025 inches (0.64 mm) for #6 or #7.0 shot, while also depending on the specific lead alloy that is used.
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Breech-loading provides the advantage of reduced reloading time because it is far quicker to load the projectile and propellant into the chamber of a gun or cannon than to reach all the way over to the front end to load ammunition and then push them back down a long tube – especially when the projectile fits tightly and the tube has spiral ...
The earliest firearms were loaded with loose powder and a lead ball, and to fire more than a single shot without reloading required multiple barrels, such as in pepper-box guns, double-barreled rifles, double-barreled shotguns, or multiple chambers, such as in revolvers. The main problem with these solutions is that they increase the bulk and ...
This speeds up the process of loading and reloading the firearm as several rounds can be loaded at once, rather than one round being loaded at a time. COL (cartridge overall length): Factory ammunition is loaded to a standard, SAAMI specified, Cartridge Overall Length so that the ammunition will reliably function in all firearms and action types.