Nitrox,
I had a drilling in 9.3 x 72r and experimented with 230 gn hollow points, as I wanted something heavier than the 196 gn flat nose RWS as an alternative for larger game than pigs, however it did not shoot terribly well with them. A gunsmith friend of mine had a drilling with hammers and they shot ok with it from memory. Mind you my 9.3 x 62 doesn't like the 230 gn projies as well. I didn't have a chrono in those days or access to one so have no record of velocities.

I would imagine that it would be a great fallow cartridge up to 100 metres tho as it worked .

cheers

Chris