Sure....but that perfect bullet can’t defeat gravity, wind, or flesh
Except that's exactly what a better bullet does compared to a lesser bullet. A more aerodynamic bullet does a better job of resisting gravity and wind, and retains more velocity at distance. If that same bullet is designed to perform better on meat at that velocity, then it does a better job in flesh too. Headstamps have very little to do with it; putting the right bullet in the right place at the right speed is everything.
This argument is why I've lost patience with so many of the 6.8 SPC fans; so many of those guys want to argue that their favorite headstamp is best instead of considering what really matters. Guys who want to argue about a particular platform (for example - "the AR15 is only good to 300 yards") are not much better.
