Complex sentence: The dimensions of.308 Winchester are almost the same as 7.62mm NATO except the chamber of the former has a marginally shorter headspace and thinner case walls than the latter due to changed specifications between 1952 and 1954.
Split into simpler sentences: The dimensions of.308 Winchester are almost the same as 7.62mm NATO. The chamber of the former has a marginally shorter headspace and thinner case walls than the latter due to changed specifications between 1952 and 1954.