RE: .270 Win or 30-06 Springfield?
I have the CDL in .30-06. I went with that caliber specifically because I wanted to go for elk & moose.If I were to go strictly for deer, however, I'd step down in caliber. Shooting the '06 isn't bad at all, but I can't keep the sight picture in the scope after a shot: I have to reacquire the target.
I was actually perilously close to getting yet another CDL in 7mm-08 right around Christmastime, but I held my breath 'til the urge had passed!
I'd say go for the .270, or even 7mm-08 or .25-06. They'll shoot plenty flat, and have more than enough power to ruin any deer's day. If they're more pleasant to shoot, then that means that they'll be...more pleasant to shoot! Whatever you can shoot lots, and do it comfortably, will be the most deadly caliber.
Oh, by the way, your rifle choice ROCKS! You'll have the sexiest weapon in hunting camp!
FC