The .358 Win. is an easy choice. Also overlooked is the .41 mag. in handguns (and possibly rifles too).

One not mentioned so far is the 6mm Rem. If it had been properly marketed (with a proper twist rate) the .243 Win. would be trying to play catch-up.

I hate change, it's never for the better.... Grumpy Old Men
The more I learn, the more I realize how little I know