Two weeks ago today, I was in Newfoundland for the opening of moose season. Two of the 6 hunters out of the lodge were using 270's, both took home their moose, both used 130 grain factory loads. Take your accuracy load hunting with full confidence that it will do its job, so long as you do yours. While your loads could certainly be improved on, a little, either is a solid hunting load for mulies.
Further, the velocity you are getting for the BT, probably will enhance its penetration capability!
Much to much is made out of using premium and/or heavy bullets, and I am guilty myself. Fact is, that thousands & thousands of deer are successfully taken every year with good "old fashioned" bullets out of factory loadings, that are often loaded well under max capabilities for the 270. Best wishes for a great hunt!
I have owned a 270 for 30+ years, and it is a great hunting caliber. In the late 80's I added a 35 Whelen, and it has performed very well in the field, and has taught me something about the 2 extremes of bullet performance. I am pretty happy to hunt with either caliber, but generally choose the one that I think will put the odds in my favor on a particular hunt.
Like you, my confidence goes up with the accuracy of the load.