For full-throttle .44 Magnum loads, I've always used and been happy with Winchester 296 powder. Light it with either CCI-350 (Magnum) or standard WLP primers.
For reduced loads for summer fun, I switch to W-231 and whatever cast bullets I feel like buying.
My 629 will shoot 240gr LSWCs @ 950-fps to about the same POI/POA as the full-power loads, at 25 yards. My Marlin 1894 requires a windage change, but no elevation adjustment, at 50 yards, and you'd best shade high at 100 when plinking!
Actually, I think that's half of the fun of shooting the .44. And so far I've only stumbled upon one really bad load (light dose of 231 in a .44 Special case, absolutely terrible accuracy).
Edited: Forgot, my standby jacketed bullet is the 240gr Hornady XTP. I got a box of Nosler 240gr JHPs a few weeks ago and so far have been impressed by their accuracy and lower cost.