Thread: Pressure is absolute or ft?

IIRC you can't/shouldn't use both as Andy has suggested. Pressure will be the "be all" with respect to ballistics.
Elevation equals pressure (or lack of) and is a function of it (pressure) i.e if you know your pressure (with reference to the current sea level air pressure) you can calculate theoretical elevation. One can't contradict the other? Correct me if Im wrong as Im not 100% sure with FTE.
I do know though, with reference to pressure being "absolute" that will be determining a zero reference. "Absolute" pressure will start in a perfect vacuum with normal sea level pressure being around 1015hPa (1atm). As you ascend air pressure is reduced and is linear against increasing altitude (if all the other variables stay the same).