So you have the 270 Win. . . Good.
Find a 140 class bullet allowed by your gestapo, stoke it up as much as you can and maintain accuracy and within 'unreasonbable'
pressure limits. I get 3200 FPS out of mine w/RL 22 with no pressure signs and great accuracy. I'm figuring it good for deer and down out to as far as I can hit 'em and under 550 or so for elk, though I don't take it for elk any longer. The moose @ 60 yards was dead, kind of slowly, but still dead.