I would go with the 7/08 simply on the issue of availibility of factory ammo.
Personally I'd not even consider a 175 gr. bull;et. The 7mm 08 and a quality 130 gr. hunting bullet pushed by typical hand loader manual "loads" will drop any whitetail or feral hog that you'll ever run into out as far as most of us are ever going to run into in the field.