The kids make fun of my choice for an old bullet like a Partition or even an Accubond with an old soul, so I remind them if every generation doesn’t produce something better the world is doomed. With 2 million big game animals taken in North America every year, and decades and decades of bullet development time, why is it the only changes seem to be in marketing of cartridges that simply duplicate old cartridge performance with more twist, and bullets with better aerodynamics and putting a cute different color tip on everything, as if that’s new or an improvement. I’m disappointed there aren’t clearly better bullets - if the current generation of bullets were clearly better folks wouldn’t have to try so hard to try and convince each other, it would simply be obvious, and threads like this wouldn’t exist.
You are just flat wrong to say the new calibers duplicate the old ones. SAAMI specs show different throats for longer high BC bullets and faster twists, among other things.
Look at a ballistic table.
It’s statements like yours there, in many variations, that create the need for conversation to eliminate the confusion.