I did a search just before I picked up some RL33, found the Alliant Reloading site.
Alliant Powder - Reloader's Guide
I can't wait to get out and try some in my 338 LM.
It has a 30"barrel and I am getting 2800 fps using 91grs of Retumbo under the Berger 300 Hybrid.
I am hoping to get another 50 fps with the RL33.