Tatume-That link doesn't work. All I got was a "www" in the address tab.
I guess I still feel in the dark a little with where to start/stop with powders like RL15 and 4064. Start loads for a 200 gr bullet in Horndady's manual suggest 54-57.8 gr max. Speer list the 220 gr bullet and RL15 at a start of 56-60 gr max. With 4064 and that same bullet their start is 52 gr and max 56 gr. How close can you get to maximum with cast loads using this data?