IMR 4064 & IMR 4895 are considered perfect for the M1 Garand for burning rate (consuming the powder and giving the right port pressure). They should be the most efficient - I would give it a try in a M742 and see how it burns - should do as well in your Remington as it does in the Garand.

One of the sanest, surest, and most generous joys of life comes from being happy over the good fortune of others.
Archibald Rutledge