The .270 has never really been a match competitor...
It has generally always been a very capable hunting round, with 800 Meters shots well within its reach using factory loads...
There is no animal in North America that cannot be taken with the .270...
And it seems to shoot flat for miles. I loved hunting deer with a .270 when I lived in MO.
I've shot a few 7mm mags, nice rifles. And I believe that it would be a great long distance rifle! I'm just stuck on the .30 caliber rounds myself, .308, .30-06, and .300 Win Mag. Get what you want and you will be happy.
every situation is diffrent but for a mainly target rifle in the 7mm class id take a hard look at the 7-08. im just not a huge fan of magnum calibers. save your sholder for more pratice. pratice will trump ballistics 9 times out of 10