a while back i experimented with 124 grain xtp bullets and hs-7 in my browning hi power. got past 1400 fps through the chrony. the gun is fine, the cases were all fine, the primers were cratered and flowed back into the firing pin hole.
i would start with a dense powder like hs-7 if you can find any, hs-6 if you can't. i wouldn't compress the powder and would make sure the bullet does not set back (shouldn't be a problem in a single shot).
cases should hold up as the 9mm is designed to be run in a hi pressure sub machine gun. i used +p cases in my little experiment.
luck,
murf