RE: 7mm-08 or 308 for big game
I'm traveling to Africa this June to hunt plains game. Myoufitter insists on a .30 cal rifle and nothing less. Gemsbok, Kudu, Eland, Zebra are all elk sized game and they feel .30 is the best choice. Most outfitters for Elk will tell youthe same.
For all the reasons spd522 lists, go with the .308.