Engineering:5mm Remington Rimfire Magnum
5 mm Remington Rimfire Magnum | ||||||||||||
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5 mm RRM (left), .22 WMR (center) and .17 HMR (right). | ||||||||||||
Type | Rifle | |||||||||||
Place of origin | United States | |||||||||||
Production history | ||||||||||||
Designer | Remington Arms Company | |||||||||||
Designed | 1969 | |||||||||||
Manufacturer | Remington | |||||||||||
Produced | 1969–1973 (original production) 2008–present (current production) | |||||||||||
Specifications | ||||||||||||
Case type | Rimmed, bottleneck | |||||||||||
Bullet diameter | .204 in (5.2 mm) | |||||||||||
Neck diameter | .225 in (5.7 mm) | |||||||||||
Shoulder diameter | .259 in (6.6 mm) | |||||||||||
Base diameter | .259 in (6.6 mm) | |||||||||||
Rim diameter | .325 in (8.3 mm) | |||||||||||
Rim thickness | .050 in (1.3 mm) | |||||||||||
Case length | 1.020 in (25.9 mm) | |||||||||||
Overall length | 1.30 in (33 mm) | |||||||||||
Primer type | Rimfire | |||||||||||
Maximum pressure ([[Engineering:Small arms ammunition pressure testing|]]) | 37,000 psi (260 MPa) | |||||||||||
Ballistic performance | ||||||||||||
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Source(s): "Cartridges of the World",[1] |
The 5 mm Remington Rimfire Magnum or 5 mm RFM[2] is a bottlenecked rimfire cartridge introduced by Remington Arms Company in 1969. Remington chambered it in a pair of bolt-action rifles, the Model 591 and Model 592, but this ammunition never became very popular, and the rifles were discontinued in 1974.[3] About 52,000 rifles and 30,000 barrels for the T/C Contender pistol were sold during its brief production run. Remington discontinued the cartridge itself in 1982,[3] leaving owners with no source of ammunition.[4][5]
In 2008, the cartridge was reintroduced by Aguila Ammunition in collaboration with Centurion Ordnance.[6][7][8]
Design
Remington designed a completely new, bottlenecked case that was somewhat similar to the older .22 Winchester Magnum, but stronger to handle the higher pressure of the 5 mm (0.20 in) at 37,000 psi (260 MPa).[2][9]
Between 1982 and 2008, no ammunition was being manufactured. Some firearms manufacturers even created conversion kits to allow the existing 5 mm guns to shoot other more-common cartridges.[5]
At the 2008 SHOT Show, Aguila Ammunition announced it would reintroduce the cartridge and begin commercial production of 5 mm RFM ammunition. Until 2019, the cartridges were sold in the United States of America under the Centurion brand. In 2019, Aguila Ammunition announced the company now offered two 5 mm RFM loads: one with a semi-jacketed hollow point bullet and a second with a full jacketed hollow point bullet. Both loads use a 30 gr (1.9 g) projectile and have a muzzle velocity of 2,300 ft/s (700 m/s).[10]
Performance
The 5 mm RRM offers higher velocity and more energy than the .22 WMR and the later .17 HMR.[6] It offers improved performance on small-game and for varmint hunting, along with excellent accuracy.[1]
Weight (grains) | Name | Brand | Type | Velocity (ft/s) | Energy (ft⋅lbf) | Trajectory (in) | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0 yd | 50 yd | 100 yd | 150 yd | 200 yd | 0 yd | 50 yd | 100 yd | 150 yd | 200 yd | 0 yd | 50 yd | 100 yd | 150 yd | 200 yd | ||||
17 gr (1.1 g) | .17 HMR | Remington | AccuTip-V | 2,550 ft/s (780 m/s) | 2,380 ft/s (730 m/s) | 1,900 ft/s (580 m/s) | 1,620 ft/s (490 m/s) | 1,378 ft/s (420 m/s) | 245 ft⋅lbf (332 J) | 185 ft⋅lbf (251 J) | 136 ft⋅lbf (184 J) | 99 ft⋅lbf (134 J) | 72 ft⋅lbf (98 J) | 0 in (0 cm) | +0.1 in (0.25 cm) | 0 in (0 cm) | −2.6 in (−6.6 cm) | |
30 gr (1.9 g) | 5 mm RFM | Centurion | Varmint | 2,480 ft/s (760 m/s) | 2,162 ft/s (659 m/s) | 1,869 ft/s (570 m/s) | 1,605 ft/s (489 m/s) | 1,380 ft/s (420 m/s) | 410 ft⋅lbf (560 J) | 311 ft⋅lbf (422 J) | 233 ft⋅lbf (316 J) | 172 ft⋅lbf (233 J) | 127 ft⋅lbf (172 J) | 0 in (0 cm) | +0.2 in (0.51 cm) | 0 in (0 cm) | −2.7 in (−6.9 cm) | |
38 gr (2.5 g) | 5 mm RFM | Remington | C.L. HP | 2,100 ft/s (640 m/s) | 1,839 ft/s (561 m/s) | 1,605 ft/s (489 m/s) | 1,401 ft/s (427 m/s) | 1,231 ft/s (375 m/s) | 372 ft⋅lbf (504 J) | 285 ft⋅lbf (386 J) | 217 ft⋅lbf (294 J) | 166 ft⋅lbf (225 J) | 128 ft⋅lbf (174 J) | 0 in (0 cm) | +0.5 in (1.3 cm) | 0 in (0 cm) | −3.9 in (−9.9 cm) | |
33 gr (2.1 g) | .22 WMR | Remington | AccuTip-V | 2,000 ft/s (610 m/s) | 1,730 ft/s (530 m/s) | 1,495 ft/s (456 m/s) | 293 ft⋅lbf (397 J) | 219 ft⋅lbf (297 J) | 164 ft⋅lbf (222 J) | 0 in (0 cm) | +0.6 in (1.5 cm) | 0 in (0 cm) |
5 mm Craig centerfire conversion
When Remington discontinued production of 5 mm RFM ammunition, owners of Remington 591 and 592 rifles were left with excellent rifles but no ammunition for them. Mike Craig, in 1994, in Seattle, began work on a centerfire conversion of the 5 mm RFM, the 5 mm Craig.[11][12] His company, Certech, also performed conversions of 5 mm rifles from rimfire to centerfire by altering the bolts and installing new firing pins, restoring them to use. Craig has since sold all the rights to the 5 mm Craig to Eagle View Arms of Shelton, Washington.[12]
Firearms chambered for 5 mm RRM
For a brief time, Thompson Center Arms offered firearms in 5 mm Mag.[5]
At the 2008 SHOT show, Taurus International introduced the first handgun chambered for the 5 mm Remington Magnum Rimfire.[13]
See also
- Rimfire ammunition
- List of rifle cartridges
- List of handgun cartridges
- Table of handgun and rifle cartridges
- 5 mm caliber
References
- ↑ 1.0 1.1 Barnes, Frank C. (2006). Skinner, Stan. ed. Cartridges of the World (11th ed.). Iola, WI, US: Gun Digest Books. pp. 475, 490, 492. ISBN 0-89689-297-2.
- ↑ 2.0 2.1 2.2 "Comparison: .17 HMR, 5 mm Rem. RF Mag, and .22 WMR". http://www.chuckhawks.com/magnum_rimfire_comparison.htm.
- ↑ 3.0 3.1 When was the 5 mm Remington rimfire discontinued? [|permanent dead link|dead link}}] at Remington.com
- ↑ Ken Ramage (5 August 2008). Gun Digest 2009: The World's Greatest Gun Book. F+W Media, Inc. pp. 239–. ISBN 978-0-89689-647-5. https://books.google.com/books?id=ft0GxbxMw6IC&pg=PA239.
- ↑ 5.0 5.1 5.2 "5mm Centerfire. - Free Online Library". https://www.thefreelibrary.com/5mm+Centerfire.-a058446488.
- ↑ 6.0 6.1 "The 5 mm Remington Rimfire Magnum" by Chuck Hawks
- ↑ Andy Moe (2008-01-28). "Aguila Brings Back the 5 mm Remington!". http://www.jesseshunting.com/articles/guns/category8/209.html.
- ↑ Bodinson, Holt (1 July 2008). "I'm ba-a-a-ck! The return of the 5 mm Remington rimfire magnum.". Guns Magazine. http://www.thefreelibrary.com/I%27m+ba-a-a-ck!+The+return+of+the+5mm+Remington+rimfire+magnum.-a0179532697. Retrieved 20 June 2015.
- ↑ Miscellaneous questions. (n.d.). http://www.frfrogspad.com/miscellk.htm#+P
- ↑ "Aguila 5 mm Ammo | New Ammunition for the Classic 5 mm Rimfire" (in en-US). 2008-03-02. http://www.gunsholstersandgear.com/2008/03/02/aguila-5mm-ammo/.
- ↑ Kenney, C. Lowell (2000). 5mm-Craig Centerfire. http://www.varminter.com/particles/5mmcraig.html.
- ↑ 12.0 12.1 "5MM Craig Story". Eagle View Arms. http://www.eagleviewarms.com/?page_id=125.
- ↑ Sturdevantsays, Lafe (2008-02-13). "Taurus 590 Revolver in 5 mm Rimfire | New Gun for Old Round" (in en-US). https://www.gunsholstersandgear.com/2008/02/13/taurus-590-revolver-5mm-rimfire/.
Original source: https://en.wikipedia.org/wiki/5mm Remington Rimfire Magnum.
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