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The German Army version of the 4.6×30mm cartridge (DM11 Penetrator) [8] weighs 6.5 g and uses a 2-g copper-plated steel bullet projectile at 720 m/s (2,362 ft/s) muzzle velocity. The DM11 Penetrator cartridge is designed for the MP7.
An open single-cavity bullet mold and a closed two-cavity mold. A cast bullet is made by allowing molten metal to solidify in a mold.Most cast bullets are made of lead alloyed with tin and antimony; but zinc alloys have been used when lead is scarce, and may be used again in response to concerns about lead toxicity.
Bullets are generally designed to penetrate, deform, or break apart. For a given material and bullet, the strike velocity is the primary factor that determines which outcome is achieved. Bullet shapes are many and varied. With a mold, bullets can be made at home for reloading ammunition, where local laws allow.
Although not originally designed for handguns, several rifle and shotgun cartridges have also been chambered in a number of large handguns, primarily in revolvers like the Phelps Heritage revolver, Century Arms revolver, Thompson/Centre Contender break-open pistol, Magnum Research BFR, and the Pfeifer Zeliska revolvers.
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 ...
Handloading is possible with 5.7×28mm ammunition, and 5.7 mm (0.22 in) bullets are widely available due to use in .223 Remington and 5.56×45mm NATO cartridges. [10] Handloaders have noted that the 5.7×28mm cartridge is very sensitive to small changes in powder charge or overall length (OAL) with a bullet inserted. [47]
A hollow-base bullet is a firearm bullet with a pit or hollow in its base which expands upon being fired, forcing the base to engage with the barrel grooves and obturating the bore more as the bullet travels through the barrel. [1] [2] Hollowing the base makes the bullet more front-heavy, which improves aerodynamic stability and accuracy.
Many shooters wonder why a .38 caliber firearm actually shoots bullets of .357 in (9.1 mm) diameter, and a .44 caliber firearm shoots bullets of .429 in (10.9 mm) diameter. In both of these cases, the name of the caliber derives from older heeled-bullet designs, and the name was kept even when the bullet was shrunk to fit inside the case.