Tuesday, December 26, 2006

RIFLE CASES - 1206001MSPMWG ,


1206001MSPMWG , -

ruger 10/22 stocks

Many .22 LR cartridges use bullets lighter than the standard 40 grains (2.6 g), fired at even higher velocities. The CCI Stinger was the first "hyper velocity" .22 LR cartridge, and provides a significant increase in velocity over standard .22 LR rounds. The Stinger uses a longer case, a stronger charge and copper plating on a lighter Ruger 10/22 stock. The case is longer than that of the normal Long Rifle cartridge, yet Stingers will fit in most Long Rifle chambered firearms. The powder is designed to burn more slowly and thus make the most use of the length of a rifle barrel. In the Stinger the extra case length is compensated by a shorter bullet, which is only available as a Ruger 10/22 stock. The thin copper layer on the bullet functions as a lubricant and reduces the friction between the high velocity bullet and the barrel, thus reducing barrel wear. It also has an oxidation-preventing effect on the lead bullet. Lead tends to oxidise if stored over long periods of time and as a result of this, the bullet's diameter increases to a level that might both prevent the insertion of the cartridge in the chamber and might cause the pressure in the barrel to rise to a dangerously high level. The increase in pressure may lead to the case rupturing and potential danger to the shooter. Standard and subsonic cartridges tend to use a type of wax for the same purpose.

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