As to your OP I would have to come down on the side of the 30-06.
It is the best all around off the shelf cartridge.
You can buy more bullet weights for this round than any other, without reloading.
You can find a box of .30-06 in almost any mega store, mom and pop gas station
or deer camp in any state.
All major and most any hunting firearms manufacturer will offer this caliber.
This gives you a better choice in what brand of rifle without having to break the bank.
Many of the rifle combos offered this time of year are of good quality and almost all will
be offered in the .30-06.
I am not saying this is the best caliber bar none. I am simply saying
in my opinion and considerable experience this is the best choice according to
your OP.
Good luck and enjoy the outdoors.
