Hodgdon can't keep their web site up with all the powders they have.
For example, they show Suprform powder as being well suited for 243 Winchester, but no listings for most others, including the 7-08, which uses powders similar to the 243.
Possibly the most satisfying element of the shooting sports for me is developing loads for diverse rounds using diverse powders, particularly "unpubished" loads, and so new powders intrigue me.
I've used Superformance in the 7X57 and found it useful for the 175 gr bullets. Its burn rate in the 7X57 is slightly faster than H4831 and Re22, so I suspect it would be the same in the 7mm-08.