RE: 270 vs. 30-06
Either caliber will work well for you. I still opt for the 270 because it kickes less (yes I have a flinching problem) and shoots flatter. You can find ammo for both guns practically any where and its not expensive. 30-06 has more nock down power, but bullet placement wins over nock down every time.
Peronal choice, get what ever floats your boat.