Gotta say I have owned a number of both and with the bullets we have today both are very capable rounds. Killed my first elk with a .270 handloader with 150 grain nosler partition bullets. Worked just fine. Killed a bunch with a 280 rem. Mostly deer and with 139 grain Hornady bullets all drt. Folks talk about 160-175 grain with a .280 which is true . In my mind a guy can't go wrong with either choice. Lots more factory ammo choices available for the .270. Happy hunting.