Either one is easily up to the job, but my choise would be the 30-06. The rifle will be lighter, and easier to carry than the 7 mag..
I like 160's in the 7mm, and 180's in the 06. a 165 grain Nosler partition would work well in the 06 too.
The caribou in the picture is one of (3) i took that day, with my 12 ga/30-06 combination gun useing 165 Noslers.
Drilling Man