Description

Shawnee KS IMR Legendary Powders has created a line of sophisticated extruded powders utilizing Enduron Technology. Their fine extruded propellant features a unique copper fouling eliminator insensitivity to temperature changes ideal loading density and is environmentally friendly.

IMR 4166 is the first in a series of Enduron propellants. It’s a perfect burn speed for cartridges like the 308 Win/7.62mm NATO 22-250 Remington 257 Roberts and dozens more. Positively a versatile match grade propellant.