IMR 7977 Powder  

The slowest burn rate Enduron Technology extruded powder is IMR 7977 Powder in stock now for sale, and is a true magnum cartridge propellant. It yields outstanding performance in such cartridges as the 300 Winchester Magnum, 7mm Remington Magnum, 338 Lapua and a host of others. IMR Reloading 7977 Smokeless Powder Loading density is perfect for magnums, nicely filling the case at maximum charges, contributing to superb uniformity and accuracy. The 7mm Remington Magnum “never had it so good”! Grain shape is extruded (stick)

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