IMR powder production dates back more than 200 years, when E.I. DuPont founded the company. The IMR series of powder is trusted by reloaders all over the world and is suitable for a wide range of reloading applications.
Enduron Technology extruded powder with the slowest burn rate, IMR 7977, is a true magnum cartridge propellant. It performs admirably in cartridges such as the 300 Winchester Magnum, 7mm Remington Magnum, 338 Lapua, and a variety of others. Loading density is ideal for magnums, filling the case nicely at maximum charges and contributing to excellent uniformity and accuracy. “Never had it so good” with the 7mm Remington Magnum!
Important Information:
- Do not exceed the loads displayed in the reloaders guide
- Never mix any two powders regardless of type, brand, or source
- Never substitute any smokeless powder for Black Powder or any Black Powder substitute.
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