When you go off on your own and exceed published limits for a cartridge, you're playing with fire. Don't expect anyone to go out on a limb to assist you on a fool's errand. "Professionals" behave professionally and responsibly.
I'm NOT a gun writer so.....
Why should the 06 be 'limited' to 50,000 CUP in "modern" firearms when 243s, 308s, 270s, etc are NOT in the same "modern" firearms? ?
What's UNSAFE about shooting 60,000 psi in MODERN firearms regardless of the cartridge? I realize most of us don't have pressure testing equipment .....
As Mule Deer has said, we can use a chronograph and load to velocity levels appropriate to the cartridge.
A Hot P D load ? funny!
Higher velocity/pressure will flatten trajectory and make longer shots easier. Higher fpe is not needed nor the goal.
Jerry