I have got some extremely high chrono measurements without pressure sign with RL-17 back in 2010.
But researching the temperature stability of that powder, I realized it was nearly worthless to me for hunting.

I would try to get 3000 fps 140 gr NBT with IMR-4166 or IMR-4451, powders that are temp stable, low Copper fouling, and available.

There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. -Ernest Hemingway
The man who makes no mistakes does not usually make anything.-- Edward John Phelps