Your inclinations are correct.
While you might lose the nose, using a pretty high s.d. bullet to begin with leaves more than enough shank for penetration, even at your top posted speed. Whats also not taken into consideration is that ww alloy wears down and powders pretty consistently, even at high impact speeds. What is lost (if you can even recover whats left of it) is surely spent in the demise of the animal. Not to mention the stress on the bullet face is a "cushion" for whats behind it, again helping maintain a bit of penetration.
We've become so used to photogenic bullets and fear failure when its really unwarranted.
