I have a .280 because about 15 years ago.....It's light and accurate and I saw no reason for a .270 once I had that rifle.
Sho' got that right!
I'd say that would work both ways....the reason I haven't owned a 280 in at least a decade or more.
What I find interesting is how anyone could think that .007", 10 gr of bullet, and 50 fps one way or the other could possibly make a difference in killing anything .