Scott F, use the same load data as you would with lubed cast bullets.
Most of what I shoot is hollow point cast bullets; powder in the nose doesn't hurt a thing. I just shake/bake them like everything else. (and yes, that goes for both expansion and accuracy, I test a lot of both)
I also say skip the penta point; we came up with that on the castboolits forum years ago, but it really doesn't do anything better than round hollow points.
On the mihec molds, you can use synthetic 2-stroke oil for sprue plate lube if you don't have Bullplate or Mihec lube.
