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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]
As a result, the Mk I gas-check was superseded by the Mk II gas-check by 1881. Fig 2 shows a 9-inch studded common shell with a Mk II gas-check. The Mk II gas-check was virtually identical to the Mk I, the main difference being that the collar had projections that fitted into the grooves on loading and resulted in faster gas sealing on firing. [8]
eBay office in Toronto, Canada. eBay Inc. (/ ˈ iː b eɪ / EE-bay, often stylized as ebay or Ebay) is an American multinational e-commerce company based in San Jose, California, that allows users to buy or view items via retail sales through online marketplaces and websites in 190 markets worldwide.
Curious about the most expensive items sold on eBay? From a gigayacht to a U.S. town, here are 10 of the most extravagant listings we could find.
Auctiva is an eBay auction management system. It was founded in 1998. One of the original members of the eBay Developer Council, Auctiva has provided sellers and merchants with tools designed to help increase their sales volume on eBay. Jeff Schlicht, who founded Auctiva, wrote a program to automate the task of placing listings on eBay.
A semiwadcutter (SWC) or flat-nose is a type of all-purpose bullet commonly used in revolvers.The SWC combines features of the traditional round-nosed bullets and the wadcutter bullets used in target shooting, and is used in both revolver and rifle cartridges for hunting, target shooting and plinking.
A rotating gas-check (more commonly known as an automatic gas-check) was a copper plate that automatically attached itself to a specially-designed studless projectile of rifled muzzle-loading ("RML") artillery, sealing the escape of gas between the projectile and the barrel and imparting axial rotation to the projectile. [1]
A leadscrew (or lead screw), also known as a power screw [1] or translation screw, [2] is a screw used as a linkage in a machine, to translate turning motion into linear motion. Because of the large area of sliding contact between their male and female members, screw threads have larger frictional energy losses compared to other linkages.