Until someone comes up with a bullet that withstands a 4k launch, expands perfectly from 1000 to 4000 fps impact with just enough fragmentation of the front 1/4 of the bullet at any velocity in between to completely wreck vitals without damaging any other edible bits, and comes to rest under the hide or just barely exits on instant command of the shooter, we'll have to deal with the concessions made when we use any projectile outside it's ideal window.
It's called a Nosler Partition. Invented over 50 years ago. I think you've used some IIRC.
