The IMR brand was created under the DuPont Corporation.
DuPont had historically been a major supplier of military propellants long before becoming one of the handloader’s favorite powders. First used in battle in 1805 by United States naval forces against pirates off the coast of Algiers, DuPont supplied more than 80% of Allied Forces powder needs in World War I.
The first IMR reloading powders included ever popular favorites IMR3031 (1934), IMR4064 (1935) and IMR4350 (1940). Each of these are still favorites with handloaders today! The IMR series of handloading powders were the only choice to wring full performance out of rifle calibers. For this reason, the IMR brand powders truly are Legendary products.
Time does not stand still and neither does the IMR brand. Although the brand continues to be a favorite of handloaders everywhere, new technology has allowed improved versions of the traditional IMR burn speeds to be introduced. Even in the early days, DuPont focused on innovation – offering “any quantity of powder as good or better than any available”. Today, IMR is still focused on innovation. Originally a line of rifle powders the IMR brand has been expanded to include powders for use in handgun, shotshell and muzzleloaders. For 2017, IMR introduced five new pistol and shotshell powders. The IMR brand commitment to bring new and legendary powders to the handloader is a never-ending process.
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