of the those mentioned, for hunting, i would either go with the 7mm-08, or the 308. the 243 is nice for target work, and some swear by it for hunting. for wisconsin whitetails it is a bit light out of a handgun. the 7mm's and 30 calibers definately have a step up in power. and alot more flexiblity in bullet weights.
so my advice is either the 7mm or the 308.