Today's ballistic computers are extremely fast. In the old days, it was possible for a Tech to beat the computer. Today....I very much doubt it. The programs currently in use are totally different. They initially produce map data, then make corrections for non-standard conditions, some actually still fly the trajectory, then display the results in gun data....all of this in a matter of seconds.
On the other hand, you...the soft-handed Technician in the nice, warm CP, have to:
a. react to the Observer's Sequence of Orders;
b. plot the target location;
c. using the GPO's Protractor, produce a bearing and range to the target;
d. convert this map data to gun data incorporating TFT's/GFT's and Met/MV corrections;
e. and enter all of this on a GPOT Proforma.
Once the initial round is fired, you have to:
a. place the Target Grid Correction Template over the target;
c. scribe the Observer/Target direction;
d. rotate the Target Grid Correction template to the direction ordered; and
e. fasten the template onto the map board and awaitt a correction.
I won't go into the drill for "Fire For Effect" which necessitates distribution of fire, application of CP&FC data, and so on.
However, a Tech that is FAST on MAPS is worth his/her weight in gun grease. Remember, if you are using MAPS, it is because the computers are down. Somebody up ther at the "sharp end" still needs rounds on the ground. They are not prepared to listen to computer excuses. Therefore, practice all you can. Take the kit home and work at it. Familiarize yourself with the TFTs. Know what is found in Table F Column 5 etc. PLOT....PLOT....PLOT
Before you know it, you'll be some kind of real Tech !!!
Good Luck !!
Ubique