5mm Craig

Tuesday, February 25th, 2020

5mm Craig

Remington introduced the 5mm Remington Rimfire Magnum or 5mm RFM in 1969 to compete against the .22 Winchester Magnum Rimfire or .22 WRM. Remington made it available in the Model 591 and Mode 592 rifles, but it never became a popular round and was discontinued in 1974. Remington manufactured 27,000 rifles and Thompson Center manufacture a large number of barrels too.

In 1994 Mike Craig found and purchased a 5mm RFM and some ammo at a gun store. He thought he would sell the ammo to collectors and he would store the rifle in his safe. The temptation was too great, and he took his new rifle and ammo to the range and began shooting. He soon ran out of ammunition and began trying to reload his rimfire cases. Reloading rimfire cases are difficult at best and there were issues finding bullets, re-priming the brass and reloading dies.

He decided to turn the 5mm RFM into a center fire and had RCBS make a set of reloading dies for him. The bolt was modified from a rimfire to center fire. He began to swage 5mm jacketed bullets and then ran into an obstacle. The 5mm RFM has no parent cartridge and he couldn’t use any other cartridge to make brass for his new center fire. He found a machinist that was able to make some case for him out of 360 ½ hard brass and the 5mm Craig was born.

The 5mm Craig is capable of propelling a .204” dia. 30 grain bullet at 2,102 fps with 294 ft.-lbs. of energy at the muzzle.

At Roberson Cartridge Company, we use C260 and C272 cartridge brass that we have made into rods for machining. Our brass alloys are hammer forged into a tight molecular grain structure with a high tensile strength and malleability. We do not use 360 brass of any kind to manufacture our cartridges.

Roberson Cartridge Company is a custom manufacture of Vintage, Obsolete, Hard to Find and Wildcat calibers.

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