Sounds like you've got an "average" .270wcf.
You read all these internet postings of 1/2" groups. but I don't believe 95% of them.
I've owned two .270's and they shot about like yours. I've seen three that would do a little bit better than yours but not significantly.
In my long memory, the .270 for many years wasn't highly regarded as a "match" grade chambering. Layne Simpson (I think, it could have been Rick Jamison) did an article by building a ~50lb ! "Rail Gun"with a ultra quality SAAMI spec. barrel in .270 to test various components, exploring the basis for this "reputation". His conclusion at the time (mid 1980's) was that it was that most of the components available at the time were not up to "match" standards(barrels, bullets, cases-). Most bullets were only capable of ~2" as most were "hunting" grade bullets, such as Winchester Power Points and Remington Corlokts.
FWIW; the Sierra's as now known as "ProHunters" were amoung the more accurate bullets. In my experience with the .270wcf, if you want to find out how accurate the gun is, load the 130gr ProHunters over 54.0gr of IMR4350 or 58.0gr of H4831 or both, and if you don't get MOA, you AIN'T gonna see MOA. (as I believe you've already found out). Second bullet for accuracy for me has been Hornady 130gr "Interlok" before it was an interlok. Third was the Nosler 130gr Ballistic Tip. Often the Nosler 130gr Partition was a 2moa bullet no matter what you shot it through. Superb hunting bullet, though.
Just because your rifle isn't an MOA rifle dosen't mean it's not an acceptable hunting gun. My two best/favorite b/a hunting rifles are neither MOA rifles. My Rem. Mod7 in 7mm08 is a 2moa rifle, but a "killing machine" of the first order. Likewise my .338/06 is a death ray but often is 2-3moa.(a little better now that I had it re-crowned). But then again, an elk is a 18" x 18" target.............
My current "darling" is a Marlin built Mod. 338 Marlin Express. It approaches MOA with lighter than factory equivalent loads, but is 1.5-2.0moa with "full factory equivalent" loads with the Hornady 200gr FTX @ 2,500fps. But, it has been DRT with everything I've shot with it.... (dead!; right there!!).