IMR 4064 Smokeless Powderimr 4064 is among the most versatile propellant while in the IMR line, used for 223 Remington, 22-250 Remington, 220 Swift, 6mm Remington, 243 Winchester Super Quick Magnum, 308 Winchester, 338 Winchester Magnum, plus the listing goes on and on. Versatility with uniformity and accuracy.This smokeless powder is a smokeless … Read More