The .338Fed will be a good round, but I don't see it getting "traction".
As far as an all around "round", I doubt that it's "quite it".
Don't get me wrong, You couldn't go wrong with it, but in my experience, you'll be less than thrilled.
Out of the gazillion rifles I've owned, I would have to say the the best "all around" is the Remington M7 in 7mm08 with a 20"bbl.
This little rifle is a joy to carry and hunt with. So far since aquiring it in 2004, It's taken two dozen deer, an Elk (reason it was obtained), and a pig, not to mention a couple of coyotes and several smaller varmints.
The cost per shot, recoil, and adaptability of the 7mm08 can't be beat.
I use Remington 140gr CorLokts for "plinking", ect. but it would serve for any reasonable purpose you'd put the 7mm08 to. The 140gr Partition does "special" duty. A friend used it in Colorado in Oct'05 to take a 6x6 bull that weighed "by outfitter!" 1,200lbs (taken on private property).
I also like the 140gr Nosler Ballistic Tip, but I am aghast at how poorly the 140gr SST has performed (think FMJ).
I love my .338/06 (ballistic "big brother" to the .338Fed). It will hold 5+1 rds vs my .300RemUltMag's 2+1 rds, so will be the "longer" gun to accompany my Marlin GuideGun when I go to Alaska.
And, the .30/06 is just..............boreing!!! The .338/06 though better, is better by only a slim margin, and bullets are 2x cost of .30's.
If I were to go with another "larger" than 7mm, It'd be the .350RemMag. in something like the Remington Mod7.
Remember, you carry the rifle FAR-FAR more than you shoot it. I can't see taking my Savage M110 in .300RUM (weighs 10lbs) or my .338/06- also 10lbs back to Colorado and walk 10+mi. per day at 7000-10,000'. The 6.5lb Remington, YES !
I don't even see my self taking my latest "toy", a .257WbyMag anywhere but a shooting house/stand overlooking a large field/powerline, about 200yds from the truck!!!
You can feed it (.350RemMag) the Remington 200gr Pt.SoftPt. Corlokts reasonably inexpensively (~18.00/100) and it's more compact than the .35Whelen, and more powerful than the .338Fed.
And, BTW, the .338/06 is actually only 90-120fps below the .338Mag. I've loaded and chronographed both. I still have the .338/06, though in a decent rifle, the recoil of the .338mag is about like the .300winMag. Not all that bad. Not quite like the .300RUM.
Just my experience.