Got to go with LTLR on the accolades for the 270 Wby Mag. Over 20 years ago, I bought one from a man at a gun show in Fort Worth that was way short of cash and needed to sell it. Paid $300 for the rifle and what was left of the first box of 20. After getting it home, shooting a few rounds and setting it in my office, my wife looked at it and informed me that if she could shoot that gun that she would like to start hunting with me. I put a new Leupold 6.5 to 20 on it, had my 'smith buddy install a muzzle brake
and bedded it. The rifle shot .60 @ 200 with my handloads and continues to hold those groups after many years of hunting everything from elk to coyotes and small varmints with lots of range time mixed in.
As mentioned, I've also heard the claims from the newer, let's reinvent the wheel flat shooters. Put 'em all on the chrono, take them to the real world and the old 270 Wby has no problem holding its own out to 1000 or better.