1899 said:I think you'll be fine, especially considering the 5% moose hunting thing. Use premium bullets and hit them behind the shoulder. You'll have be eating moose steak if you do your part. My dad shot his first moose with a 25-06 and factory Winchester 120gr PEP.
Moose aren't that hard to kill, and with a 115gr X or 120 Partition you will have enough penetration to cleanly take moose on a broadside or 1/4-ing away shot at the distances you mention.
I agree, for your application, a 25-06 would certainly work well. Other options are as BigRedd said, and use a 270, and match the bullet to the task at hand.