Fully powered cartridge

][citation needed] The term generally refers to traditional cartridges used in machine guns and bolt action and semi-automatic service rifles and select fire battle rifles prior to, during, and immediately after the World Wars and into the early Cold War era,[2] and was a retronym originally made to differentiate from intermediate-power rifle cartridges that gained widespread adoption into military service after World War II.

This does not guarantee actual widespread future issue of the brass-steel hybrid cased 6.8×51mm Common Cartridge.

Having dozens of different cartridges all with unique dimensions was a headache for rifle manufacturers, and still wanting to reach the widest consumer market possible, they had to find a way to economically produce rifles that could be adapted to accept every chambering on the market.

Most of today's long-action cartridges had their cases designed around .30-06 Springfield's case dimensions, such as the .270 Winchester, .280 Remington, .35 Whelen, .264 Winchester Magnum, and 7mm Remington Magnum, as well as much newer cartridges like the .26 Nosler and .28 Nosler.

With a much shorter COL of 2.8 in (71 mm) and using the improved propellants available in the 1950s, it could do nearly everything traditional military rifle cartridges did, such as the .30-06 Springfield, but was cheaper to make, lighter in weight, more compact in size, and had lower recoil energy.