When first recommended for adoption, M1 Garand rifles were chambered for the .276 Pedersen, which held ten rounds in its unique en-bloc clips.

[1] The .276 Pedersen was a shorter, lighter and lower pressure round than the .30-06, which made the design of an autoloading rifle easier than the long, powerful .30-06.

[1]Immediately after World War II, British designers introduced a series of intermediate-power 7mm cartridges for a different reason than Pedersen.

The U.S. stuck with the .30 caliber mostly out of a desire to have a common cartridge between rifle and machine gun combined with the perceived necessity for effectiveness out to 2,000 yards and perforation of intermediate barriers.

Shortly after the 7.62mm NATO cartridge was adopted, Armalite submitted their AR-10 for evaluation, the U.S. Army suggested they redesign the gun to fire a .256 caliber projectile.

Nearly 100 years after the .276 Pedersen introduced the concept of a 7mm infantry round for semi-automatic rifles, on April 19, 2022, the United States Army adopted the .277 Fury (6.8x51mm Common) as the United States Army's general-purpose cartridge, this cartridge features a 7.04 mm bullet in a two-part version of a necked down 7.62x51mm NATO case.