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Originally in 1903, the rifle was chambered for the 1903 cartridge in .30 caliber (30-'03 Caliber). The Army was not pleased with it, and after refinement the US Army re-tested the rifle & ammo, finally adopting them both in 1906 as; the model 1903 Springfield rifle and 30-'06 cartridge (.30 caliber bullet adopted by the US Army in 1906).

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15y ago

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