The 270 is one of the all time favorite calibers (since around '54 anyway). I think that's when it came out. It is an excellent whitetail cartridge. I can't give you too much info on factory ammo but I'm sure any of the reputable brands like Remington, Winchester or Federal would suit your needs just fine. I'd recommend the 130 gr. loads however. These tend to shoot better than the 150's. But try both the 130's and the 150's and see what shoots best out of your rifle.
I handload for my .270 and it really likes the Nosler solid base boattails in front of 55 gr of IMR 4350 powder.