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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. Most commercial bullet manufacturers use swaging in preference to casting, but bullet casting remains popular with handloaders. [1]
Cast bullets as cast (left), with gas check (center) and lubricated (right). A gas check is a gasket type component of firearms ammunition. Gas checks are used when non-jacketed bullets are used in high pressure cartridges. The use of a gas check inhibits the buildup of lead in the barrel and improves accuracy. [1]
With a mold, bullets can be made at home for reloading ammunition, where local laws allow. Hand-casting, however, is only time- and cost-effective for solid lead bullets. Cast and jacketed bullets are also commercially available from numerous manufacturers for handloading and are most often more convenient than casting bullets from bulk or ...
Cast lead bullets may also be fired in full power magnum handgun rounds like the 44 Magnum with the addition of a gas check, which is a thin aluminum, zinc or copper washer or cup that is crimped over a tiny heel on the base of appropriate cast bullets. This provides protection for the base of the bullet, and allows velocities of over 1500 ft/s ...
Bullets Armor-piercing (AP): A hard bullet made from steel or tungsten alloys in a pointed shape typically covered by a thin layer of lead and or a copper or brass jacket. The lead and jacket are intended to prevent barrel wear from the hard-core materials. AP bullets are sometimes less effective on unarmored targets than FMJ bullets are.
Two bullet molds for lead casting. A hand mold is a simple mold used for low quantity work. It is used in the injection molding and printing industries. It is made by a hand injection molding machine. It is a simple machine which contains a barrel, handle, nozzle, mold and heaters.
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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.