.276 Prototype Rifles

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US White .276 semiauto. White . Colt US Thompson .276 semiauto – Forgotten Weapons. Thompson. US Pedersen .276 rifle – Forgotten Weapons. Pedersen. r/ForgottenWeapons - A host of rare .276 self-loading rifles for US trials, with their designers (1929). Czech ZH-29 rifle. ZH29. Top to bottom: The .30 caliber M1903 Springfield repeating rifle, the .276 caliber T3E1 Garand semiautomatic rifle, the .276 caliber Pedersen semiautomatic rifle, this particular example most likely having been designated T2E1.. Garand r/ForgottenWeapons - Photo taken during US .276 self-loading rifle trials Heinemann/Rheinmetall 1928 rifle field stripped, Aberdeen photo

Heinemann/Rheinmetall 1928 rifle field stripped, Aberdeen photo.

Danish Bang rifle in .276 Enfield for British trials (1913)

P13_Enfield_Rifle. . L.S.A. self-loading rifle: The London Small Arms autoloading rifle, caliber .276, was developed in 1909 for consideration by the British Army.

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I am surprised. Didn’t think anyone outside the US would use such a cartridge

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The Garand should have been .276 but huge stockpiles of WW1 303 well waste not want not, no doubt also a reason for the 37mm in early tanks