My go to for fun plinker load is 240gr swaged SWC over 5.5 - 6 g of Red Dot. Thousands of those down the tube, easy on the gun and the shooter. I think that load gets 825 - 850 fps from a 6" barrel.
My old CAS standard .44 load in a Magnum case with any weight lead bullet was 7 grains of Bullseye, Clays, Red Dot, or 700-X. It made little difference which. In a .44 Special case, I dropped back to 6 grains.