What pads do you have on the car?

Normal "street" pads have a coefficient of friction of .3-.4. Race pads might have as high as a .5-.6, almost doubling the friction, which almost doubles the stopping with the same pedal pressure/ line pressure. Keep in mind some may not have a good coefficient until warmed up.

It is definitely worth finding out what the coefficient of friction of your pads are, though I agree that 800 is low.