Raimey,
I must be missing something in the translation. Where does he get the 80gr. .228" bonded core bullet that he adds the Corbin 6 mm Jacket to? Will he sell these bullets (without adding the 6mm jacket) ? It seems that adding a 6mm jacket to a .228" bullet and sizing the whole thing to .228" would result in a monometal bullet by forcing the core out and if you trapped the core inside, you couldn't size it to .228" with available equipment.
Mike