Easy shooting 9 X 19 load :
Lee 105 gr. cast lead SWC ( 358-105-SWC), sized .357 , 4.7 grs. Unique .
Lee 120 gr. cast TC (356-120-TC) sized .357 , 4.7 grs. Unique .
Easy shooting 38 Special Load :
148 gr. cast lead WC , 2.7 grs Bullseye .
Any cast lead bullet - 140 gr. to 160 gr. WC , SWC , RF - 4.7 grs. Unique .
Other powders that will do well are any of the faster powders : 700X , Titegroup , Bullseye , Red Dot , W231 , HP-38, Acc #2, there are a couple others like Herco and Green Dot that could be used but you don't see a lot of load data for them ... but if Herco or Green dot is all you can get ...buy it .
I've found in these days of shortage buy any and all pistol powders you can find and a little searching will turn up load data .
Bullseye and Unique are still my favorites and nothing can beat them ... 700X , Titegroup , Red Dot , W231 , HP-38 and Acc #2 come close ...but none beat them .
Gary