IMR 4064 Smokeless Powder imr 4064 is easily the most functional propellant in 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 also the listing goes on and on. Versatility with uniformity and accuracy. https://aeschylusq012ffn7.ageeksblog.com/profile