IMR 4064 Smokeless Powderimr 4064 is easily the most versatile propellant during the IMR line, useful for 223 Remington, 22-250 Remington, 220 Swift, 6mm Remington, 243 Winchester Super Brief Magnum, 308 Winchester, 338 Winchester Magnum, and the record goes on and on. Versatility with uniformity and precision.This smokeless powder can be a smokel… Read More