Here's my favorite load so far. It's not a maximum load, but it does a job on whitetails.
IMR 4350 47 grs
Hornady 150 gr. Spire Pt. (.311")
Fed 210M primer
Norma brass
I haven't played around a lot with this cartridge, but I hope to experiment more with it in the future. I've got some other powders I want to try.