PLease, Please put this everywhere when you get it ready to go.
I'm blue in the face form de-bunking this myth over & over again.
I've personally loaded, shot, re-loaded, & re shot .308 Win. & 7.62mm NATO in rifles chambered for both for years & years.
I was actually banned from one website for daring to suggest that they weren't different in any practical sense.
The .308 win was a shilen custom-barreled remington 700.
The 7.62's were an M1a (an early one from Springfield armoury, before the mil-spec parts shortage) and an Imbel barreled & recievered FAL.
If anecdotal evidence will help bolster the case consider me on board.