IMR 7977

The slowest burn rate Enduron Technology extruded powder and a true

magnum cartridge propellant. Yields outstanding performance in such cartridges as the 300

Winchester Magnum, 7mm Remington Magnum, 338 Lapua and a host of others. Loading

density is perfect for magnums, nicely filling the case at maximum charges, contributing to

superb uniformity and accuracy