The .270 Win was my dream rifle as a kid. My first hunting rifle purchase (trade?) was for a Parker-Hale .270 Win. Killed lot's of deer with it. Shop I worked in got some new Parker-Hale's in. I stupidly swapped my original for a new one. Wish I had the old one back, alas....! When we married, I bought my wife a Ruger No.1 .270 Win. Wife seldom hunts. I seldom use the Parker-Hale! Wish I had purchased another No.1 .270! LOL!
The .270 isn't the do-all, kill-all, be-all, end-all cartridge.
Are there "better" cartridges out there? Probably! ...but the "average" American hunter can't do much better than a .270 Win as a one rifle hunter.
Wonder just how many deer, elk, moose, bear, buffalo, caribou, etc have fallen to the lowly .30-30 Win?
You can only kill 'em so dead!
I'd say the biggest detriment to the .30-06 Spgfld class cartridges right now is the short AR cartridges. Heck! I even went to the 6.8mm Rem SPC....which IS a .277" bullet!