RE: whats the difference between .308 and a 7.62mm X 39mm, or are they the same?
Pharoh, I believe you misread my post...I in no way implied that that list of 7mm cartridges HAS ANYTHING to do with the two 7.62mm cartridges in question, I simply used an analogy of the number of various rounds that share a common "first name" bullet diameter that are certainly NOT the same case...I could have accomplished the same by saying that the nomenclature for the 7.62mm rounds can be comprehended more easily by comparing this system with the .300's, ie. .300WSM, .300Dakota Mag, .300Win mag, .300RUM, etc etc.
I felt that this guy would be more familiar with the variety of 7mm cartridges (i.e. realize that there is more than one 7mm cartridge available) and be able to associate that with the question at hand.