Years ago, 55 to be exact, read an article in OUTDOOR LIFE(when it REALLY was a great mag) Jack O'Conner wrote an article on the .280/.270/.284.
basically,ain't no difference:argue2
all will get the job done with proper bullet placement AND projectiles that SUIT the game hunted.
I DO like my .284...have a model88.
Just before retiring back in 2012 (Now semi retired) I bought a SAVAGE in .300 mag and sold my 2 .30-06.
........I SHOULD have just bought a .280 and have been done with it......heck,here on the BIG ISLAND,i thought our monster blacks (Bears) needed something BIG......last few fell to an ancient 6.5x58mm