I doubt that obsolete or outdated are terms that have as much meaning as they used to.

We have bullets today that can make a given round perform over a much wider spectrum of use when combined with the powders available. I killed a 200 lb+ deer last fall with a .223 and made a 3 inch hole through the off side shoulder, tore up the lungs and left the heart loose in the chest. That using a 53 grain bullet. My 30-30 pushes 150 grain Barnes TSXs at 2400 FPS. I never tried to see, but with 3 full grans of LeverEvolution to go before it hits book max I think it will be right on 2700 FPS. 308 Winchesters with 130 grain TTSXs are really, really nice deer rounds, something a few years ago we used 150s for.

We have a lot more we can do with all rounds now. That includes high performance rounds too.