Owning and shooting two 300 WSM's and two 6.5-284's light and heavy rifles in each.
Bryan Litz is totally correct, the 7mm would take care of both.
I did choose the 300 over the 7mm because I wanted bigger holes on elk and I chose the 6.5 over the 7mm because I wanted less recoil with the same ballistic performance as the 7.
But if choosing just one rifle the 7 WSM would cover all ground ime.
