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The rimmed.30-40 round was also known as .30 Army or .30 U.S. Although the .30-40 Krag was the first smokeless powder round adopted by the U.S. military, it retained the "caliber-charge" naming system of earlier black powder cartridges, i.e. a .30-caliber bullet propelled by 40 grains (2.6 g) of smokeless powder.
Although the .30-40 Krag was the first smokeless powder round adopted by the U.S. military, it retained the "caliber-charge" designation of earlier black powder cartridges, thus the .30-40 Krag employs a .30 caliber (7.62 mm) bullet propelled by 40 grains (3 g) of smokeless powder.
.30-40 Krag brass can be used to form .35 Winchester cases. [3] It was intended to be a medium-sized caliber falling between the .30-40 Krag and the .405 Winchester, and so it outperformed the .33 Winchester but was less potent than the .348 or .358. [2]
Below is a list of rimmed cartridges (R).Although similar, it must be noted that rimmed cartridges differ from rimfire cartridges ().A rimmed cartridge is a cartridge with a rim, whose primer is located in the center of the case head; the primer is detonated by the firing pin striking that center location.
The brass cases can be formed from .30-30 Winchester, .32 Winchester Special, and .38-55 Winchester casings, if no correct brass is available. [4] Great care must be taken as the Winchester brass is about .020” smaller at the base and case failure is possible. It is safer to obtain correct .303 Savage brass, which shows up occasionally in ...
Due to very close dimensional relationships, boxer-primed cartridge cases can be made by resizing and trimming .303 British [16] or .30-40 Krag (.30-40 US) [17] brass, and Fire forming the resulting altered brass cases in the 6.5x53R chamber.
Blake submitted two of his rifles to the trials, [1] both chambered in .30 Blake cartridge — a rimless version of the .30-40 Krag cartridge. [3] On August 19, 1892, Army Board recommended the Norwegian Krag–Jørgensen rifle to be adopted as the new service rifle. American designers were against the Army's adoption of a foreign design.
Colonel Whelen once told Ken Waters [4] that he doubted if any man ever spent so much time perfecting a cartridge as Ned Roberts did with his .25 Roberts, as he originally called it. Colonel Townsend Whelen and Mr. L. C. Weldin, ballistic engineer of the Hercules Powder Company advised using a shoulder angle of 15° in order to hold down ...