I found reloading data for 165 grain X-treme bullets:

Power pistol - 4.2 grain at 34,686 psi (estimated) for 851 fps

Accurate #7 - 5.3 grains at 32,683 psi (estimated) for 894 fps

This suggests that a slightly heavier bullet with Acc #7 powder could get the 830 fps velocity that I'm looking for.

The doesn't address the TYPE of bullet that would easily expand at that velocity.

__________________
"He was kinda funny lookin'"