The best source of load data is John Ross. John worked with S&W to pressure test his loads, and pressure tested loads are always the final word on the subject. There's just one catch -- John's website is offline.
In the meantime here are some Quickload numbers for a revolver. Quickload is not always correct -- it should be viewed as a rough estimate, because that's all it is. I have not tested these loads and cannot vouch for them -- I'm merely reporting what Quickload says.
710 gr. cast / 0.65" seating depth / 30 gr. Accurate 1680 / 100% fill ratio / 1100 fps / 49,000 psi
710 gr. cast / 0.65" seating depth / 26.3 gr. either IMR or Hodgdon 4227 / 100% fill ratio / 1060 fps / 43,000 psi
710 gr. cast / 0.65" seating depth / 24.4 gr. N110 / 100% fill ratio / 1090 fps / 50,000 psi
For max velocities, H110 / WW296 might be the way to go, but I'm not going to post Quickload data for that powder because a 100% fill ratio generates 72,000 psi!
Without pressure tested data you could get into trouble.
There are certainly other powders that can be used and have been used with the 700 grain bullet, but for safety's sake I only posted powders that were safe with 100% fill ratio.
If anyone has John Ross' pressure tested data, please share.