Silenttracker,
You could slow down your v-max, but it probably won't help alot. You may well have to go to a softpoint to keep that hole down in size. I've found that little plastic tip intact just under the skin of a couple of creatures I've shot with my .17 hmr, so apparently it will come off and allow bullet expansion pretty early, even at velocities around 2600 fps. My guess would be a more solid bullet a little slower. Good luck!
irkjr