IMR 4064 Smokeless Powder imr 4064 is easily the most flexible propellant inside the IMR line, employed for 223 Remington, 22-250 Remington, 220 Swift, 6mm Remington, 243 Winchester Super Small Magnum, 308 Winchester, 338 Winchester Magnum, and also the list goes on and on. Flexibility with uniformity and accuracy. https://benjamine046sxg4.techionblog.com/profile