Rifleman Q & A: What About the 5 mm Remington Rimfire Magnum?

by
posted on July 14, 2017
** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. **
perfaps.jpg

Q: Why didn’t the 5 mm Remington Rimfire Magnum catch on like the .17 HMR has in recent years? Does anyone still chamber this cartridge, and is it even available in a factory load today?

A: The answer as to why the 5 mm did not survive in the market is somewhat subjective, and a number of knowledgeable people disagree on the details. Most would agree that the 5 mm RRM was a good idea; it was essentially Remington’s effort to provide a more effective option to the .22 Winchester Magnum Rimfire. Unfortunately, the 5 mm was offered only with a hollow-point bullet and was quite destructive on edible game. A non-expanding bullet might have altered the perception.

At the time of its production, Remington was the only source for rifles and ammunition, although Thompson/Center did offer Contender barrels for a while. The only current ammunition maker is Aguila, but the production is limited. According to the company, “Aguila still manufactures this very popular 5 mm ammunition.” It appears that distribution has been delayed due to rimfire demand, so patience is the only option.

—John W. Treakle

Latest

Shortage
Shortage

Suppressor Demand Outpaces Production

The demand for suppressors is setting new records. National Firearm Act (NFA) item purchases in September—primarily suppressors—more than doubled compared to the same month in 2025.

Book Review | Five Decades of a Fabulous Firearm: Celebrating the 50th Anniversary of the Beretta 92 Pistol Series

In this wide-ranging book, you’ll find a history of Beretta, discussion of developments leading to the Model 1951/951 Brigadier, its evolution into the Model 92 and the U.S. military’s adoption of the platform (as the M9) in 1985.

Review: Galco Revenger Holster & SB7 Gun Belt

For those who choose to carry a finely finished, K-frame revolver, Galco offers one of its finest concealed-carry setups in the form of its Revenger holster and SB7 gun belt.

Rimfire Power: The Primary Arms CLx 1-6x24 mm Riflescope with ACSS 22LR G2 Reticle

Low-power variable optics have become popular options for today's AR-15s and other modern sporting rifles, and Primary Arms now offers an option tailored for rimfire versions of those same guns.

Gun of the Week: Walther Arms PDP F-Series Pro-X PMM

One of Walther Arms' recent introductions combines the features of several other PDP handguns, meaning the Walther PDP F-Series Pro-X PMM is packed with a number of different design elements.

The Armed Citizen® Oct. 30, 2026

Read today's "The Armed Citizen" entry for real stories of law-abiding citizens, past and present, who used their firearms to save lives.

Interests



Get the best of American Rifleman delivered to your inbox.