HPT,
The three basic rifle categories most hunters should seek to cover is the varminter, medium hunting rifle, and thumper.
You have the varmiter and medium rifle categories covered. But for hunting large tough critters in wild country, something bigger's in order, in the range of the .338 Win mag to one of the modern .375's.
The .338 covers a wide range of hunting opportunities, and delivers sufficient energy at longer ranges for the largest North Americana or African plain's game.
Additionally, when hunting, I always take a backup, and have needed it more then once.
