That's a high incline bench setting he's using, so not a true shoulder/overhead press. His back is supported by the bench , which allows a better foundation for pressing, and more help from the pec/chest .. But impressive anyway, for a man of his age.
To be a true shoulder/overhead press he should be either sitting or standing, free from any supports. And the bar should be directly pressed overhead. That 315 would probably be a 220-230 if a true overhead press.