With a 270win I think just about all bullet weights work equally well. Back home in Montana the biggest bull I ever helped packout was killed with 130gr Core Lokt, in 270win. One shot, one dead elk. That guy sighted his gun in dead on at 25 yards and figured he was dead on hold to 300. He had somewhere in the neighborhood of 35 dead elk over the years to prove it was effective, and this was 20 years ago. He'd never ran anything but 130gr core lokts through his gun.