Remington .25-06 Remington, PSP Core-Lokt, 120 Grain, 500 Rounds

History[edit]

Charles Newton necked down the .30-06 Springfield cartridge in 1912 to accept a 117-grain .25-35 Winchester bullet,^[3] but the resulting .256 Newton cartridge did not catch on. Newton’s early modification encouraged commercial release of a shortened case (from 63 to 49 mm) as the .250-3000 Savage in 1915.^[4] Frankford Arsenal developed an experimental .25-06 during World War I; and distribution of surplus United States military equipment through the Civilian Marksmanship Program following the war encouraged independent gunsmiths to experiment with the cartridge.^[3] A. O. Niedner of Dowagiac, Michigan, introduced rifles for the .25 Niedner in 1920.^[5] Niedner Arms Corporation retained the 17° 30′ .30-06 shoulder chambering .25 caliber barrels rifled with one twist in 12 inches (300 mm).^[6] Similar cartridges were identified as the .25 Hi-Power, .25 Whelen (analogous to .35 Whelen), or .25-100-3000 (to indicate the ability to achieve 3,000 feet-per-second with a 100-grain bullet rather than the 87-grain bullet used in the .250-3000 Savage). Greater case capacity offered minimal velocity improvement over the .250-3000 Savage case with contemporary smokeless powders.^[7] Availability of DuPont‘s Improved Military Rifle (IMR) powders encouraged commercial release of the .257 Roberts using the 57 mm Mauser case in 1934.^[8] Release of IMR 4350 in 1940 and availability of surplus 4831 powder salvaged from Oerlikon 20 mm cannon cartridges after World War II greatly improved performance of the full-length .25-06 case.Remington .25-06 Remington