IMR's first Enduron Technology powder features copper fouling elimination, temperature insensitivity, and ideal loading density. Perfect for .308 Win, .22-250 Rem, .257 Roberts and more.
IMR Legendary Powders has engineered a sophisticated line of extruded propellants built on Enduron Technology. The 4166 is the first in this series, designed to meet the demanding requirements of serious handloaders.
IMR 4166 is perfectly suited for:
Whether you're loading for precision rifle work, hunting, or general target shooting, IMR 4166 delivers the consistency and performance serious reloaders expect. Each 1-pound can provides ample powder for extensive handloading projects.