5mm Remington Rimfire Magnum

5mm Remington Rimfire Magnum (5mm RRM) Ammo

The 5mm Remington Rimfire Magnum, commonly known as 5mm RRM, is a high-velocity rimfire cartridge designed for flat trajectory and impressive downrange performance. Originally developed for precision and varmint hunting, it remains a favorite among shooters who appreciate unique rimfire calibers with excellent speed and accuracy.

At PrimeReloaders.com, we provide dependable 5mm RRM ammo for shooters running legacy rifles and modern platforms chambered in this cartridge. Proper ammunition selection is critical due to the cartridge’s unique dimensions and performance characteristics. When paired with the right rifle, the 5mm RRM delivers minimal recoil, excellent accuracy, and strong terminal results for small-game and varmint applications.

Shooters often compare the 5mm RRM to other rimfire magnum cartridges, noting its higher velocity and flatter trajectory. Although less common than .22 WMR, the 5mm Remington Rimfire Magnum remains a respected option for shooters who value performance and precision in a rimfire platform.

Explore our selection of 5mm RRM ammunition to keep your rifle shooting reliably and accurately.

Quick FAQs – 5mm Remington Rimfire Magnum

What is 5mm RRM best used for?
It’s commonly used for varmint hunting and precision rimfire shooting due to its high velocity and flat trajectory.

Is 5mm RRM ammo still available?
Yes. While not as common as other rimfire calibers, 5mm RRM ammo is still produced by select manufacturers.

Does 5mm RRM have heavy recoil?
No. 5mm RRM recoil is mild, making it comfortable to shoot while still offering magnum-level performance.

Can 5mm RRM be used in handguns or revolvers?
The cartridge is primarily designed for rifles. Dedicated 5mm RRM handguns or revolvers are extremely rare.