IMR 4064 Smokeless Gun PowderIMR 4064 is a medium-range burn speed powder and is one of the most versatile propellant in the IMR line, used for 223 Remington, 22-250 Remington, 220 Swift, 6mm imr 4064 powder Remington, 243 Winchester Super 4064 imr powder Short Magnum, 308 Winchester, 338 Winchester Magnum, and the list goes on and on. Versatility … Read More