#5mm

Hello and welcome back to another edition of The Rimfire Report! The Rimfire Report is all about the rimfire firearm world. Sometimes we talk targets, sometimes we talk guns, and other times like today we’ll be talking about ammunition. 5mm Remington Rimfire Magnum (RRM) is a relatively new offering in the rimfire firearm world. The round was designed back in 1969 but wasn’t put into production until the early 70s. Billed as a more affordable high-velocity rimfire cartridge, 5mm RRM was intended to squeeze a little bit of extra range out of the similarly sized .22WMR case but in the long run, 5mm RRM never quite caught on and eventually was discontinued in 1973. However, in 2008, a few companies started producing 5mm Remington Rimfire Magnum along with rumors that some companies would begin producing firearms chambered in 5mm RRM. So is 5mm RRM completely dead or is there hope of it being resurrected at some point down the road?

The United States Special Operations Command (SOCOM) is considering a caliber change for their future semiautomatic sniper weapons systems. Although traditionally these medium range precision weapons have been chambered for the 7.62x51mm caliber common to NATO, it seems SOCOM is looking to get a little more out of them by changing over to a new 6.5mm/0.264″ caliber round. The Command is investigating two off-the-shelf options: The 6.5mm Creedmoor (6.5x49mm) and the .260 Remington (6.5x52mm). Both rounds are extremely similar, each being based on the .308 Winchester case (the Creedmoor by way of the all-but-forgotten .30 T/C) necked down. From Military Times:

Links to the GunPundit SHOT Show 2008 coverage.

The 5mm Remington Rimfire Magnum is back!