The .270 Win is an interesting cartridge, in my opinion, because it has such a wide application potential. I achieved excellent accuracy with 90 grain Speer Hot Core HPs, and 100 grain Speer Hot Core spire points. Those were dandy varmint rounds. By excellent accuracy, I mean 1" to 1.25" at 100 out to 200ish yards.
The 130 grain projectiles were excellent for medium sized game, including whitetail deer, ram and wild boar. Several of the old-school professional hunters proclaimed that if a rifle would not group with 60 grains of H4831 and a 130 grain projectile, that it was likely the shooter's fault, not the rifle. Sure, it's a bit of overstatement. But it is true, that the given load, is accurate accross all of the .270 Wins that I have owned. My Weatherby Vanguard VGX grouped quite consistently, in the 1.25", 3-shots, at 300 yards benched.
It's hard to beat that accuracy, unless you were firing my previously owned Sako, Finnbear in .270 Win. Said load would (also with AA3100) print clover leaf groups, 3-shots, at 100 yards, and I could consistently hit 5 of 6, 2-liter pop bottles at 500 yards in the gravel pit.
While I prefer the 130 grain projectiles, others like the .270 Win for the 150 grain projectle, because it has a very high ballistic coefficient, and as such the projectile slips through the air, retaining higher velocity, and offers higher terminal energy than the 130 grain projectile. I never used the 150s for hunting.
One of my friends borrowed my Weatherby Mark V (9-lug variant), in .270 Win to harvest a 200ish pound boar, using 140 grain projectiles. He was using Winchester Supreme bonded loads. It was one of the fastest downings of a game animal I have ever witnessed. I would put the terminal effect of that shot on-par with what I witnessed with my .257 Wea Mag, and my .300 Wea Mags. It almost appeared to drive that boar to the ground. I suspect he hit the spine. Regardless, one of the best shots I've ever seen.
There are also 160 grain projectiles for the .270 Win. So, whatever you want to hunt, varmint to moose, the .270 Win has done it, and with good effect. IMHO, it is difficult to out-class a .270 Win, for most hunting applications in the lower 48. That is not to slam the .25-06 Rem, which I think is a very close equal, or the .280 Rem, or of course the .30-06 Sprg, perhaps king-of-the-nonbelted cartridges.
But, the .270 Win?! Excellent round. Now, you would only have the task of selecting which of the dozens of rifle availabilities to purchase.
Geno