...unless there's a chance it will have to digest corroded, dirty, dented or poorly spec'd ammo as is sometimes the case on the battlefield.
FWIW, I suspect Remington was using a match type chamber and the "7.62 NATO" label was just that...a poorly descriptive label.
Like I said before, I can't speak to the throat diameter, but I can tell you mine doesn't have a tight chamber neck. Fired brass comes out of it at .344" so it's larger than that.
