I use the following in my 38/44 pre 23 ODM all with Lyman 358429 Keith SWC 173grs with my alloy : 12.5grs H4227 & WSPM primer , 8.5grs VVN-105 & Fed 100 primer , 12.5grs 2400 & Fed 100 primer , 13.5grs W296 & WSPM primer , 7.5grs 800X & Fed 100 primer , 7.0grs SR-4756 & Fed 100 . All should be OK in your Ruger 357 . I would not shoot these in a K frame S&W , best to plainly mark these type of loads so they don't wind up in a less strong gun . I use +P brass & colorcasehead with a Red Sharpie permanent marker .