I also own several 357's, but end up shooting mostly 148gr 38 Spcls. Can't seem to get enough 148gr Hi-Tek coated DEWC from Missouri Bullet Co.
Same here. I bet it's been over 10 years since I've shot a .357 load, but shoot over 1,000 rounds of .38 wadcutters each winter.
Back when I did shoot alot of .357, I used Sierra 158 JSP and JHC's (shot about 6 Montana whitetail does with these bullets, saw zero performance differences between them), Hornady 180 XTP's, and a boatload of cast bullets ranging from 125 to 205 grains.
Any of the powders you used 20 years ago will still be good performers. Stay in the burn rate of 2400, H110/296, Enforcer, etc. The new 300-MP that Son of the Gael mentioned is supposed to be a good one. I bought a pound of it but haven't tried it yet. Another that can turn in some top velocities is LilGun, but be advised it burns hot.