You have to realize that when this round was first introduced we didn't have the bullets that we have today. Sure with premiums like NP and TSX you can use smaller calibers on large game but until 40 years ago, you needed bullets with more weight in order to assure adequate penetration even on deer. Thus the -06 with 180's was the gold standard on deer and everything else.
Is it "needed" today? Not really. But with bullets from 100 to 220gr you can load it to do anything you want.


I am continually astounded at how quickly people make up their minds on little evidence or none at all.
Jack O'Connor