I've been reloading the .44 Magnum since late 60's. You've had good advice so far. Play with the powder charges at one grain intervals if you aren't happy with the gun's accuracy. I prefer cast lead bullets for reduced loads.
One of my favorite light loads I got from an Elmer Keith article. It is 5 grs. of Bullseye under a 250 gr. cast keith bullet. At about 750 fps. with "cream puff" recoil, it hits alot harder than you'd think.
The only thing you might find it that reduced loads won't shoot where your full power loads will. Many have found that the Big 44 works quite well with 240-250 gr. bullets at a mere 1000-1100 fps. however. E