I decided to test this, so I stuck a PPC on one of my Commandos and headed for the training grounds.
The method I used was this:
* Stand 90m from a fresh 'mech
* Fire the PPC once into its CT
* Note down the health percentage readout
* Move forwards 10m
* Repeat from step 2.
First 'mech I saw was a COM-1B (128 armour + 85 IS = 223 health)
90m: 95% (11.15 damage)
80m: 91% (8.92 damage)
70m: 89% (4.46 damage)
60m: 87% (4.46 damage)
50m: 85% (4.46 damage)
40m: Poor thing died on me, so I went to look for a more well-armoured CT.
I found a CN9-A (272 armour + 175 IS = 447 health):
90m: 97% (13.41 damage)
80m: 95% (8.94 damage)
70m: 94% (4.47 damage)
60m: 93% (4.47 damage)
50m: 92% (4.47 damage)
40m: had to take two shots to get to 91% = about 2.2 damage/shot
30m: 4 shots to get to 90% = about 1.1 damage/shot
20m: 9 shots to get to 89% = about 0.5 damage/shot
10m: 29 shots to get to 88% = about 0.15 damage/shot
Plotting those numbers into a graph, this is what I get (red is Commando, blue is Cent):
Doesn't look very linear to me. Although plotting the health percentages instead of the calculated damage done makes it look way more linear:
But that is probably a fault with my methodology; of course it's going to be linear as I only shot until I got a percent reduction, and in the CN9-A's case, that would be a single percent per 10m distance. The percentage graph doesn't take into account that under 50 meters I needed multiple shots to affect a single percentage change.
Edited by stjobe, 14 April 2013 - 02:50 AM.