Prwlr,
I think you're confusing a couple of articles. Have written about how my first .243 was only getting around 2750-2800 with 105-grain Speer Hot-Cors, which the manual I got the load from (which used the same length barrel) listed it as right around 3000 fps. Also, have written about how a good friend (and fellow gun writer) was only getting 2700 fps from 160-grain bullets in his first 7mm Remington Magnum. In both instances, we'd been killing big game with our rifles and handloads for several years before our first chronographs disillusioned us.
My first .270, on the other hand, got pretty close to "book velocities," around 3000 fps with 130's and 2850 with 150's, from a 22" barrel.
