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Number 4831 was used to load navy anti-aircraft machine gun ammunition, and number 4895 was used to load United States service rifle ammunition. As these propellants became military surplus after the war, large quantities of different batches were blended together to make products with uniform average performance for sale to civilians.
DuPont added IMR 4895 to their retail distribution line in 1962, and added IMR 4831 in 1973 when supplies of surplus H4831 were exhausted. [11] Hodgdon then acquired newly manufactured H4831 from Nobel Enterprises in Scotland.
An IMR smokeless powder for reloading The Hagley Museum in Wilmington, Delaware. IMR Legendary Powders is a line of smokeless powders which are popularly used in sporting and military/police firearm cartridges. The initials 'IMR' stand for Improved Military Rifle powder. IMR powders makes a line of various types of smokeless powder suitable for ...
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The M3 was designed to be used with the M1 series (for the M1903 Springfield rifle), M2 series (for the M1917 Enfield rifle), and M7 series (for the M1 Garand rifle) spigot grenade launchers and used a propellant that was a mixture of five grains of FFFG black powder and 40 grains of IMR-4895 smokeless powder.
The standard military cartridge and the currently available Prvi Partizan can be duplicated using modern smokeless powders branded by Hodgdon such as H 4831, H4064, and IMR 4895. [5] Data includes options for .264 and .267 sized projectiles. Appropriate sized bullets (.267–.268 in.) would have to be hand cast using bullet moulds.
Following World War II, independent gunsmiths in the United States began exploring the ballistic possibilities of military surplus IMR 4831 powder salvaged from Oerlikon 20mm cannon cartridges and marketed by Hodgdon Powder Company. [3]
He then sought sources of surplus rifles that he could sell for a profit. [ 1 ] With his brother-in-law, Manny Weigensberg, Sucher made contacts in foreign countries for the importation of military surplus rifles and handguns and by the 1970s, Century became the single largest importer of firearms in the United States and Canada.