I pretty much agree. In fact, after hunting various kinds of big game in 14 countries, from animals weighing under 100 pounds to some around 1500, I am sure all would have been killed quite readily with a .30-06 and 180-grain Nosler Partitions, including Cape buffalo.
Same could be said about various other rounds, including the 12-gauge. Have killed everything from doves to my biggest black bear, a Vancouver island boat that squared 7 feet.
But would it have been as much fun? Or educational? Or would I have been as certain of all of this now, if that's all I'd used?
Oh, and I turn 69 in a couple of weeks!