Re: 270 or 30-06
For the uses you menation either will suit him well. THe advantage of the 06' is a bigger variety of bullet weights to choose from. From 100gr up to 220gr you can just about cover anything your likley to encounter.
The advantage of the .270 is a slightly flatter trajectory with the 130gr bullets. However even though there are less a variety of weights to pick from, the 130's through the 150's are pleanty for most encounters.
Both are generally capable of excellent accuracy with some of the newer factory loads and especially from some careful handloads.
For the ranges you mentioned it is really a toss up. I have at least two of them in each caliber, and use which ever one the mood strikes me at the time. This past weekend I had my pop's old 03A3 with me, while in the backwoods, but also had the .270 in a Rem. BDL sitting in the truck.
Good Luck, I personally don't see a downside to either choice.
Mike / Tx
"Heck why would I lie, most folks don't believe the truth when I tell them"