Could use a bit of help with my problem, as I'm somewhat a math-lectic.
PROBLEM: Correcting trajectory for measured barometric pressure and temperature to score first round hits without sighters.
Trajectories are to my understanding calculated according to a standard atmosphere. Change this and the bullet will behave differently and the calculated BC will change.
SO FAR: If barometric correction X temperature correction X original BC = new BC
and
Barometric corr = Standard pressure : measured pressure,
Temp corr = measured Rankin temp : standard Rankin temp
...then I can calculate the deviations (not correctly, but better than not doing it) by working out a new dropchart for the new BC.
I WANT: To find correction factors where I can correct directly from a trajectory chart without going the long way around and making a new one.
Any takers ?
[ 07-23-2004: Message edited by: sierra22 ]
PROBLEM: Correcting trajectory for measured barometric pressure and temperature to score first round hits without sighters.
Trajectories are to my understanding calculated according to a standard atmosphere. Change this and the bullet will behave differently and the calculated BC will change.
SO FAR: If barometric correction X temperature correction X original BC = new BC
and
Barometric corr = Standard pressure : measured pressure,
Temp corr = measured Rankin temp : standard Rankin temp
...then I can calculate the deviations (not correctly, but better than not doing it) by working out a new dropchart for the new BC.
I WANT: To find correction factors where I can correct directly from a trajectory chart without going the long way around and making a new one.
Any takers ?
[ 07-23-2004: Message edited by: sierra22 ]