My plinkertoy bullet for 9mm is from a Lee .358" 105 grain SWC mold. I run it through a .356" size die and call it good.
Initial load data was from somebody over on castboolits. Above bullet with 4.4 grains of Unique with a CCI 500 primer.
Nice, light target load. My Hi Power eats it like pop corn.
I wouldn't do jacketed .38/.357 bullets in a 9mm. Stick with cast lead and size it down if you want to go that route.
The only reason I delved into it was I wanted a semi wad cutter and a couple other bullet profiles not readily available in a .356" mold to run through my 9mm stuff.