IMR Enduron 7977 Rifle Powder 1 lb - 979771

IMR Enduron 7977 is a slow-burn magnum rifle powder designed for large cartridges including 300 Winchester Magnum, 7mm Remington Magnum, and 338 Lapua. The powder features excellent loading density that fills magnum cases at maximum charges for superior uniformity and accuracy. The Enduron series includes a copper fouling eliminator to reduce barrel fouling.