No other powders tested yet. I wish I had some data or more experience with Rl7. I think it would work well.
RL7 might be a good one. I've been using 748 Win. and has worked well for a few cartridges. Using it for 35 Remington for awhile with success. Getting over 2200 fps out of 20" barrel pushing 212 gr. RCBS FNGC's.
