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

attack in a back alley
attack in a back alley

Cold Performance: How to Prepare for the Uncertainty of Self-Defense

Defensive gun use is defined by uncertainty. You don’t know when it will happen, how far away the threat will be, how many threats you will face or what position you will be in when it begins.

Derya Goes Silent: The OBone Suppressor

In 2025, Turkish manufacturer Derya Arms opened a new facility in Florida, enabling the company to produce a number of new products domestically, such as its new OBone suppressor.

The Armed Citizen® Oct. 26, 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.

Rifleman Q&A: Understanding a Firearm's Cycle of Operation

The cycle of operation is the mechanical sequence of events that it takes to fire one shot out of a firearm. If one of those steps fails to take place as designed, there is an interruption in the cycle of operation and the gun stops firing.

Review: Sightmark Pinnacle 1-6x24 mm Riflescope

Looking for a performance LPVO without the usual associated cost? The Sightmark Pinnacle 1-6x24 mm might be your answer.

Myths & Misunderstandings About the “Modern Fighting 1911”

The Colt Model 1911 pistol and its derivatives are among the most iconic military handguns ever made. But in 2026, does the M1911 still hold up as a quality defensive arm?

Interests



Get the best of American Rifleman delivered to your inbox.