Nothing specific for those powders; however, Bob Forker ( I believe ) wrote an article in Shooting Times, some years ago, in which he listed those powders as suitable for the 480 Ruger. He did not list any loads for those powders in the article. The burn rate chart from Hornady ( on their website ) shows sr4756 3 steps slower than hs-6 and sr4759 1 step slower than Lil' Gun. Brian Pearce lists a load for the 500 S&W of hs-6, 22.0 gr, with an LBT 440 cast wfngc, a midrange load of 1356 fps in an 8 3/8" barrel Smith, in the Lyman Pistol and Revolver load book, 3rd Ed. Load From a Disk or QuickLoad software would provide loads for those calibers and powders.
Hope this helps!