RE: best caliber rifle for white tails???
Caliber, anything from 22 cal on up can be effective on deer. I chose to limit myself to 25 thru 50 cal. The most effective is the one I have in my hand right now. If all my guns were to be stollen (or distroyed in a fire ect.) the first deer caliber I would buy would be a 7mm.
Cartigde, for me the minimum is a 222 with knowing its limitations. The most effecent start at about a 257 Roberts and go up to 30' 06. Larger and smaller will kill just fine just not as ' effecent' . In the catistrofic loss of above, I would buy a 7-08 first.