I've always admired the .270 Win from a distance. With the 150-gr bullet, it gives you a sectional density of .279, .008 higher than the versatile 180-grainer in .30 caliber. Velocity is around 2,800 fps, giving you a scanty 7" drop at 300 yards, a distance beyond which in my book hunting becomes sniping.
I am in the gun industry and I understand the excitement about new calibers (e.g., the 6.5s in the 2010s, the WSMs and WSSMs in the early 2000s, etc.). So I get why among some shooters, calibers like .30-06 and .270 are yawn-inducing. Plus, the .270, while used by the tens of thousands of sportsmen in Africa, does not have the Golden Age allure of a .275, a 6.5x54 or the .375 H&H. Oh, and nobody famous (that I know of) ever took an elephant with it, thereby shutting it categorically out of the African Hall of Fame--while it not being a military cartridge also precludes it from being associated with a historical conflict, or even with a cool surplus rifle.
Yet, for game up to and including kudu or leopard, I can't think of a single thing wrong with the .270 and plenty of reasons to have one, provided that I stay within the 150-gr range bullet-wise.
But I've said I've always admired it from a distance, because I'm a fan of cartridges that have some kind of historical or even exotic appeal, and the .270 falls short (at least for me). When I think of the .270 I immediately make the association with 1960s Monte Carlo stocks, white spacers, high gloss finishes and skip-line checkering--in other words, the bell-bottom pants of the rifle world. I know this is very silly and grossly unfair, but there is something about someone's identification with certain calibers that goes well beyond the rational and well into the psychological--it's like affection and loyalty for certain brands that become "our thing." So my mind is with Jack O'Connor's pet cartridge, while my heart lies elsewhere.