IMR 4064 Smokeless Powderimr 4064 is considered the most flexible propellant from the IMR line, used for 223 Remington, 22-250 Remington, 220 Swift, 6mm Remington, 243 Winchester Tremendous Quick Magnum, 308 Winchester, 338 Winchester Magnum, and the list goes on and on. Versatility with uniformity and precision.This smokeless powder is usually a … Read More