IMR 4064 is a single base, medium-array melt away velocity powder and is The most functional propellant in the IMR line, useful for 223 Remington, 22-250 Remington, 220 Swift, 6mm Remington, 243 Winchester Tremendous Small Magnum, 308 Winchester, imr 4064 338 Winchester Magnum, as well as record goes on imr 4064 powder and on. Versatility with uniformity and accuracy.
Important Information:

Do not exceed the hundreds shown inside the reloaders manual.
By no means blend any two powders in spite of variety, brand, or resource.
Never imr 4064 ever substitute any smokeless powder for Black Powder or any Black Powder substitute.