IMR 4064 Smokeless Powderimr 4064 is easily the most flexible propellant inside the IMR line, utilized for 223 Remington, 22-250 Remington, 220 Swift, 6mm Remington, 243 Winchester Tremendous Shorter Magnum, 308 Winchester, 338 Winchester Magnum, plus the checklist goes on and on. Flexibility with uniformity and precision.This smokeless powder is … Read More