CH - the title of the article is "300 Win Mag - The One Rifle Battery" and that was the point I made.
One rifle, one caliber and one bullet/load will do it all.
I've hunted and killed with most of the calibers I mentioned but within the stated meaning of the article, they all leave something off the "table".
DF - I love your Winchesters, veddy, veddy nice indeed!
One rifle, one cartridge but the original article specifically discusses different bullet weights.
Between the two (.30-06 and .300WM), if I had to stick with one bullet for everything a .30-06 and a 165/168g bullet would get the nod.
For the 20+ years I had one bolt rifle, a 7mm RM and 160g bullets did p-dogs. coyotes, antelope, deer and elk.