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Gas check. 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.
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. Most commercial bullet manufacturers use swaging in preference to casting, but bullet ...
The .30-30 Winchester / 7.8x51mmR (officially named the .30 Winchester Center Fire or .30 WCF) cartridge was first marketed for the Winchester Model 1894 lever-action rifle in 1895. [4] The .30-30 (pronounced "thirty-thirty"), as it is most commonly known, along with the .25-35 Winchester, was offered that year as the United States' first small ...
Ballistics are similar to the .30-30 cartridge and its .308 caliber (7.62 mm) bullet, but the larger diameter .321 (8.15 mm) bullet of the .32 WS will create a larger wound. However, given the same weight of bullet in both calibers, the .30 caliber has a greater sectional density , and correspondingly greater penetration.
The original 45-70 loading was designated 45–70–405, referring to a 45 caliber bullet, 70 grains of black powder, and a 405 grain lead round nose bullet. It had a muzzle velocity of 1,350 feet per second (410 m/s). A reduced-power load of 55 grains (3.6 g) of powder (Carbine Load) was manufactured for carbine use with a muzzle velocity of ...
The .277 Wolverine (6.8x39mm) is a wildcat cartridge. It is a multi-purpose mid-power cartridge with increased ballistic performance over the AR-15 's traditional .223 Remington (5.56×45mm NATO) cartridge. The use of a modified 5.56 case means that at minimum, only a new barrel is needed to convert any 5.56-based firearm to .277 Wolverine.
Bullet weights available for this cartridge range from a 265-grain (17.2 g) jacketed hollow point to a 740-grain (48 g) hardcast lead bullet. The heaviest bullet, produced by Tazza Bullets in Queensland, Australia, is a hardcast lead bullet weighing 740 grains, about the same as a common .50 BMG projectile. This bullet, launched at ...
A hunting flat nosed cast bullet will hold together without expanding and carry a large amount of air envelope with it causing a great amount of cavitation and wounding. Since it is cavitation that does most of the damage when a bullet strikes a game animal this means the flat nose bullet is an extremely effective hunting design.