Thread: ? Head Space

In theory it is possible to set up a 308 with a 7-08 head space gauge , not the other way around , as the two rounds are the same except from some obvious differences . Head space is measured from the base of a cartridge to the point at which it seals the chamber ,so the only difference being calibre which puts the neck a little further out and if the gauge can chamber then in theory it will work as long as practice does not rear its ugly head .
So in the end it is a double headed question of theory versus practice and using the correct gauge eliminates the dilemma.