If by living you mean survival, then 30-06 and 22 mag
No, he didn't mean survival.
For Clarification....
Say your job is hunting for a living, limited to any and all North American game. Canada to Mexico and everything in between. But you could only choose 2 calibers for your hunting career. What 2 do you pick and why?
I've read all posts to P3 and SO many good selections of a PAIR for hunting "Canada--Mexico --everything in between".
I could agree with many of those posting but my choice is based on Prof Hunters and my experiences.
I pick these 2 because I know they're capable and dependable AND I can shoot them confidently.
270 W/280 R, one of: AND
300 WM The ONLY reason I choose 300 WM over 30-06 is it's capability at LONG range to hit HARD and FLAT trajectory.
I hope we never have to limit ourselves to 1 or 2..... there are too many good rounds to choose from.
Jerry