Buying a new Big Game Hunting Cartridge.?

if you already have a 270 which is a great all purpose round why not get something a little heavier then your choices listed. the 300 wsm and 7mm mag really are not much bigger then your 270. i would go with something like a 325 wsm that adds a little more spread in the different calibers in your collection. i bought a 325 wsm in a browning a bolt about a year ago and love it.