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A rimfire is a type of firearm cartridge. It is called a rimfire because, instead of the firing pin striking the primer cap at the center of the base of the cartridge to ignite it (as in a centerfire cartridge), the pin strikes the base's rim. The rimfire cartridge is essentially an extended and widened percussion cap which contains not only the priming compound, but also the propellant powder and the projectile (bullet). Once the cartridge has been struck and discharged it cannot be reloaded, as the head is deformed by the firing pin impact. While many different cartridge priming methods have been tried, only rimfire and centerfire survive today in significant use.

Characteristics


Rimfire cartridges, due to the thin case they must have, are limited to low pressure calibers. While in the past, rimfire calibers up to .44 (11 mm) were common, modern rimfires tend to be of caliber .22 (5.5 mm) or smaller. The low pressures mean that rimfire firearms can be very light and inexpensive, which has helped lead to the continuing popularity of the small caliber rimfire cartridges.

Economics


Rimfire cartridges are typically inexpensive, due primarily to large production quantities. A box of fifty inexpensive .22 Long Rifle cartridges typically costs less than US$1.00. Premium or match-grade .22 Long Rifle cartridges, as well as less common or out-of-production rimfire cartridges (such as the .22 Short, .22 Long, .32 Rimfire, .22 Winchester Auto, .22 WMR, and 5 mm Remington) can cost substantially more.

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A new .22 rimfire 1911 for $299! http://bit.ly/1Cmp0
aloanatlast (A Loan At Last) Thu, 05 Nov 2009 21:56:03 -0000
A new .22 rimfire 1911 for $299! http://bit.ly/1Cmp0
Rossi has a new single-shot, break-action gun. Interchangeable barrels from .22 rimfire to big centerfires and shotgun.
Guntalk (Tom Gresham) Thu, 05 Nov 2009 15:54:14 -0000
Rossi has a new single-shot, break-action gun. Interchangeable barrels from .22 rimfire to big centerfires and shotgun.
small 32 rimfire, who made it?: Sorry, no S&W antique. But I would like to ask the help of you. I traded th.. http://bit.ly/2NRDnf
Antiques_World (Antiques Worldwide) Thu, 05 Nov 2009 13:33:54 -0000
small 32 rimfire, who made it?: Sorry, no S&W antique. But I would like to ask the help of you. I traded th.. http://bit.ly/2NRDnf
Forum Recap - http://bit.ly/15VjBD - New .22 Rimfire 1911 Semi-Auto for $299 - Feral hog hits Prius, knocks car off... http://bit.ly/46fDAO
cheaperthandirt (Cheaper Than Dirt) Wed, 04 Nov 2009 18:26:31 -0000
Forum Recap - http://bit.ly/15VjBD - New .22 Rimfire 1911 Semi-Auto for $299 - Feral hog hits Prius, knocks car off... http://bit.ly/46fDAO
A New .22 Rimfire 1911 Semi-Auto for $299 http://bit.ly/300KOQ
cheaperthandirt (Cheaper Than Dirt) Wed, 04 Nov 2009 18:20:25 -0000
A New .22 Rimfire 1911 Semi-Auto for $299 http://bit.ly/300KOQ
Rimfire Guns and Ammo FAQ send in your questions! http://bit.ly/3TUPml #guns #firearms #ammo #NRA
gunsandshooting (SoozieKew) Tue, 03 Nov 2009 20:40:01 -0000
Rimfire Guns and Ammo FAQ send in your questions! http://bit.ly/3TUPml #guns #firearms #ammo #NRA

 
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