It has become common currency in the cruffler community to warn against shooting "high-pressure" .308 Win. ammo in 7.62 NATO rifles. After all, it's right there in black and white: Chamber presure; .308 Win., 62,000 psi; 7.62 NATO, 50,000 p.s.i.
But wait, my NRA Handloading guide (1981)...