5 mm Remington Rimfire Magnum
Encyclopedia
The 5 mm Remington Rimfire Magnum is an obsolete bottlenecked rimfire cartridge introduced by Remington Arms Company in 1970. Remington chambered it in a pair of bolt-action rifles, the Model 591 and Model 592, but the round never became very popular, and the rifles were discontinued in 1974. The ammo discontinued in 1982. About 52,000 rifles were sold during its brief production run. As of 2008, Aguila, a Mexican
Mexico
The United Mexican States , commonly known as Mexico , is a federal constitutional republic in North America. It is bordered on the north by the United States; on the south and west by the Pacific Ocean; on the southeast by Guatemala, Belize, and the Caribbean Sea; and on the east by the Gulf of...

 ammunition company, is producing 5mm Remington Magnum ammunition.

Design

Remington designed a new case that was very similar to the older .22 Mag, but stronger to handle the higher pressure of the 5 mm at 33,000 PSI
Pounds per square inch
The pound per square inch or, more accurately, pound-force per square inch is a unit of pressure or of stress based on avoirdupois units...

. It uses a 5mm (.20 caliber) bullet that measure 0.2045 inches (5.2 mm), the same as the more recent .204 Ruger
.204 Ruger
The .204 Ruger is a centerfire rifle cartridge developed by Hornady and Ruger. At the time of its introduction in 2004, the .204 Ruger was the highest velocity commercially produced ammunition, and the only cartridge produced commercially for bullets of .204 inch/5 mm caliber.-Characteristics:The...

 cartridge.

For a brief time, Thompson Center Arms
Thompson Center Arms
Thompson/Center Arms Company is an American firearms company based in Rochester, New Hampshire. The company is best known for its line of interchangeable barrel single-shot pistols and rifles. Thompson Center manufactures muzzleloading rifles and is credited with creating the resurgence of their...

 offered firearms in 5 mm Mag. From 1982 until 2008, no ammunition manufacturers manufactured rounds for this cartridge, but some firearms manufacturers are creating conversion kits to allow the existing 5 mm guns to shoot other more-common cartridges.

At the 2008 SHOT show, Taurus International introduced the first handgun chambered for the 5mm Remington Magnum rimfire. Concurrent with the announcement from Taurus, Aguila Ammunition announced they would begin producing 5mm RMR ammunition in 2008.

As of May 2011, Taurus has not yet imported nor produced their Tracker in 5mm Remington rimfire. They had stated that it will be manufactured and imported pending production demand in the second half of 2010.

Performance

The 5 mm Mag offers higher velocity than the .22 WMR
.22 WMR
The .22 Winchester Magnum Rimfire, more commonly called .22 WMR, .22 Magnum, or simply .22 Mag, is a rimfire rifle cartridge...

 and more energy than either the .22 WMR or the later .17 HMR
.17 HMR
.17 Hornady Magnum Rimfire, commonly known as the .17 HMR, is a rimfire rifle cartridge developed by the ammunition company Hornady in 2002. It descended from the .22 Magnum by necking down the .22 Magnum case to take a .17 caliber bullet, and it is more costly to shoot than traditional .22...

. They offer decent performance on small-game and for varmint hunting. The Aguila/Centurion 5mm Magnum ammunition comes in two offerings, the original "White Box" in a 30 grain hp, as well as their "Varmint" round which is a 30 grain jacketed hp.

Centerfire Conversion to 5mm Craig

When Remington discontinued production of 5mm RRM ammunition, owners of Remington 591 and 592 rifles were left with excellent rifles but no ammunition for them. Mike Craig of Seattle, WA, in 1994 began work on a centerfire conversion of the 5mm RRM, the 5mm Craig. His company, Certech, also performed conversions of 5mm rifles from rimfire to centerfire by altering the bolt and installing a new firing pin. The result was that owners of these rifles could once again enjoy shooting them. Mike has since sold all the rights to the 5mm Craig to Eagle View Arms of Shelton, WA.

See also

  • Rimfire ammunition
    Rimfire ammunition
    A rimfire is a type of firearm cartridge. It is called a rimfire because instead of the firing pin of a gun striking the primer cap at the center of the base of the cartridge to ignite it , the pin strikes the base's rim....

  • List of rifle cartridges
  • List of handgun cartridges
  • 5 mm caliber
    5 mm caliber
    This article lists firearm cartridges which have a bullet in the to caliber range.*Length refers to the cartridge case length.*OAL refers to the overall length of the cartridge.All measurements are in mm .-Rimfire cartridges:...

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