RE: 30-06, .270 , .308 which is a better for whitetail
All will take deer clean, no doubt about it. I personally think it' s a preference of action, long or short. If you plan on sticking primarily to deer I' d say the 308 or 7mm-08, but if you plan on hunting larger game look at the 06, but I wouldn' t go 270, I personally would go 7mm.