Is a Winchester model 70 caliber 30-06 a long or short action?

The 30-06 cartridge is a long action cartridge,there by your Winchester model 70 bolt action rifle is a long action.A short action is defined by any cartridge that has a overall length of 2.810in or less.Any cartridge loaded to a length of over 2.810 inches is considered a long action cartridge.the loaded max length of a 30-06 is 3.340in.I hope that you find this informative.