James B has a vote.

One time around 1903 there was a 30cal round that revolutionized the hunting world and I believe that it held it's ground with not any dispute until the magnum craze hit the world. Even though the magnums were out before the craze didn't really happen until the late 80's. Bigger better and killed on both ends. If you did a nationwide survey it would still be the No 1 spot of a caliber that is used to hunt almost everything. And this is coming from a person that's not a 30-06 true fan. I prefer the 270win over it. I'm a trajectory man. I like em fast and flat. But all around from deer to kodiak one rifle it's hard to leave it out of the top spot. Hail the 30-06 they got it right the first time.

All around caliber is the one that is accurate enough to hit where you wanted it too.

All around bullet is the one that killed your animal.

The world is full of preferences I'll take the old traveled road it all ways leads me home to a gut pile.