I loaded up some test rounds for the .30-30 with the Hornady 150 gr. RN and H335 based on the max charge in the Hornady manual. Lyman has a similar max, but Speer and Hodgdon have a substantially lower max. Has anyone out there worked with this combo? I've used H335 with the Speer 170 gr. bullet and their data, and that worked ok.