Since you are going to pretend you didn't see it, lets repost it here.
You tried to use the diagram of the 7.62x54r to prove what the .308 was not.
Here is a link to show you are wrong about the .308 Win. round.
http://www.chuckhawks.com/definitive...ce_caliber.htm
"Calibre is described as being "bore" diameter (inside bore diameter, ID), which is gauged across the lands of the rifling in the bore of a weapon. The diameter of the projectile is usually equal to the "groove" diameter of the bore, measured across the depth of the groves in the bore (outside bore diameter, OD), or in some cases is slightly bigger than the OD of the bore."
"Some common examples of this differentiation in calibre are the .308 Winchester and the .243 Winchester. The .308 Winchester is in reality a standard .30 calibre cartridge. .308 rifles have a bore diameter of .300" and a groove/bullet diameter of .308". (Both dimensions are identical to the earlier .30-06 and .300 Magnum.)
Lets look at that quote again, or at least a small part "...and a groove/bullet diameter of .308"