IMR Powder – 4166 1lb.

IMR #4166 1lb IMR Enduron 4166 is a versatile, match‐grade propellant, with the fastest burn rate in the Enduron line. It is an extruded powder with a perfect burn speed for cartridges like 308 Winchester, 7.62mm NATO, 22‐250 Remington or 257 Roberts, among other cartridges. 1lb IMR 4166 Powder,