What is the most versitale caliber? By that I mean, what is your choice of a caliber that will take anything from whitetail to moose? I personally prefer the 30-30 with a 180 gr. bullet because with precise bullet placement, it can take down anything, I am fully aware that can be said for most other guns too but I just love the accuracy of a nice lever action .30-30.....that's me just being biased though. My un-biased opinion is that a .30-06 is probably the most versatile caliber without worrying about bullet placement too much.