I've had great luck with Hornady 165 grain BTSP on 20+ antelope. The antelope have never gone very far and all the bullets have exited. I've also used 165 grain SSTs, some 180 grain Partitions and an extended range variant of a Remington Core-Lokt on a few here and there. All the animals died in sight, though the Partitions on balance seemed to cause a little more bloodshot meat. Maybe I hit bone with those....
Antelope are hardy, but pretty lightly built, so I don't think it matters much; shoot what is accurate in your gun.
