Thanks everyone. I'm thinking the partition and mega will be the experiment. The hornady round nose was mentioned but I'd likely just buy it in the factory.

Now for the evolution of the thread.... WHAT Powder...

I've seen 4831sc, 4350, and the mrp/rl mentioned quite frequently.
While I have the eyeballs of experienced users, what is the recommended powder to push both bullets. In this thread I have seen some loads...curious to know if both bullets of different weights can be pushed effectively with the same powder or if different powders are recommended.