I shoot a lot of Hornady 148 WC, 158 SWC Frontier lead and Speer 158 SWC in my 38 and 357 and no lead. However in my 44 SBH the Speer SWC is leading and I’m working on finding a load where it won’t.
However I haven’t tried loading them as hot as you want to though.
After a couple hundred through my 14-3, 686 or 28 there is slight leading just past the forcing cone but takes a few passes with brush and is gone.
I’m using Bullseye and 231 for powder.