I don't shoot factory loads in the .270 to speak of. I only shoot them to compare their trajectory with my loads in case I'd forget handloads on a hunt. Like any other rifle, yours will probably like one brand or one bullet more than another. Who can guarantee what that will be?
The .270 is a handloader's dream in my opinion. I recommend you learn to 'roll your own'. Plenty of powder and bullet selection for everybody.....
Hodgdon's H4831sc is good in my rifle, with some bullets. It all depends upon what your rifle likes.
I'd go with a Hodgdon or an IMR powder labeled '4831' or '4350' ; or with Winchester 760. They all require working up your loads, with Hodgdon's 4831 (regular or 'sc') being somewhat slower than IMR's 4831.
Work up your loads and you should find an accurate one with good velocity. Use Win' large rifle, or CCI (#250) large rifle magnum, primers with Win' 760. You can use CCI (#200) standard large rifle primers with the 'stick' powders.
Good shooting/hunting to you,
SS'