Some years ago I settled on just exactly two loads for my .44 magnum. The first is a good cast 240 grain wheelweight bullet over 19.0 grains of Alliant 2400. This gives over 1300 fps from my Ruger and does what I expect a .44 magnum to do.
The other load uses .44 Special brass with that same bullet. Use 7.5 grains of Unique and in my gun the bullet leaves the barrel at 970 fps. It's a little stouter than the old factory loads for the .44 Special, but doesn't overly stress the revolver. Truth be told, that's the load that I use for about 95% of my .44 shooting and it seems to do everything that I want done.