This is gunnery in a computer program. I've written about this before with all the gunsight tools for offline testing and resulting graphs of impact points at known distances on the offline target.
1. Offline change the arena time to 01:00 so that the white of the target dosent cause your gunsight to dissapere at full zoom.
2. Takoff and head north about 1-2k alt.
3. Allow your fighter to achive max cruise or the speed at which the gunsight center stops dropping on the target at full zoom.
4. The center of your gunsight will drop below the red center line of the target. The center of the target is your fighters center line.
5. Test with your guns set to 150, 250, 350 convergence with the target at 100, 200, 300, 400, 500, 600 yards.
6. If you are using a gunsight that is 512x512 1Mil will equal 2pixel.
7. At each range fire then record how far below or above the gunsight center your rounds pattern. Keep track of the dispersion diameters also.
Here are some results I pulled from the 2.25 release offline.
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Gunsight Data Collection by: bustr
Aces High 2 ver 2.25 - 8/6/11
Gunsight data collection was performed in (Mil Units) from a gunsight constructed on a 512x512 bitmap mask where 1Mil = 2Pixel. Data was collected at 150, 200, 300, 400, 600 yards. Each aircraft was tested with all guns convergence set to 150, 250, 350. Bullet impact data was collected at each distance in auto level. All values are to the closest whole number due to visual limitations of Full Zoom and dispersion patterning.
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1Mil @ 150yds = 5 inches
1Mil @ 200yds = 7 inches
1Mil @ 300yds = 11 inches
1Mil @ 400yds = 14 inches
1MIl @ 600yds = 20 inches
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1.}Pos or neg numbers are relative to the gunsight center(0)& earth(-)=down.
2.)Wing mounted guns cause a 2-5Mil nose drop during extending firing.
3.}HUB cannon fighters, P38, Mosquito, A20 have no nose movement.
4.}A6m have a very small nose movement down when firing.
5.}La5/7 have a 2Mil nose up when firing.
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Aircraft
P51D - Spit16 - La7 - 190D9 - 109K4 - Yak9U - Typhoon - A6m5 - N1K2J - Ki84 P38J - 109G6 - HurriI
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P51D -----150-----200-----300-----400-----600-----Auto Level
150------(-2)----(+2)-----(0)----(-1)----(-1)
250------(-2)----(-3)-----(0)----(-1)----(-2)
350------(-3)----(-4)----(-1)----(-2)----(-3)
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Spit16----150-----200-----300-----400-----600-----Auto Level
150------(-4)----(-2)-----(0)-----(-1)----(-5)
250------(-5)----(-3)-----(0)-----(-1)----(-5)
350------(-5)----(-4)----(-2)-----(-3)----(-5)
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La-7-----150-----200-----300-----400-----600-----Auto Level
150-----(+2)----(+2)----(+2)-----(0)----(-5)
250-----(+2)----(+1)-----(0)----(-2)----(-6)
350-----(+1)----(+1)-----(0)----(-1)----(-6)
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190D9----150-----200-----300-----400-----600-----Auto Level
150------(0)----(-1)----(-3)----(-3)----(-8)
250-----(-1)-----(0)----(-2)----(-2)----(-7)
350------(0)-----(0)-----(0)----(-2)----(-7)
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109K4----150-----200-----300-----400-----600-----Auto Level
150------(0)-----(0)----(-2)----(-5)----(-15)
250------(0)-----(0)----(-2)----(-5)----(-16)
350-----(+1)----(+1)-----(0)----(-2)----(-17)
All data for 109K4 taken from MK108 30mm impact points.
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Yak9U----150-----200-----300-----400-----600-----Auto Level
150------(0)-----(0)-----(0)----(-1)-----(-5)
250------(0)-----(0)-----(0)----(-1)-----(-7)
350------(0)-----(0)-----(0)----(-2)-----(-7)
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Typhoon--150-----200-----300-----400-----600-----Auto Level
150------(0)-----(0)-----(0)-----(0)-----(0)
250-----(-2)----(-1)-----(0)-----(0)----(-5)
350-----(-5)----(-2)----(-1)----(-2)----(-5)
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A6m5-----150-----200-----300-----400-----600-----Auto Level
150------(0)----(-1)----(-1)----(-2)----(-5)
250------(0)----(-1)----(-1)----(-3)----(-6)
350-----(-1)----(-1)----(-1)----(-4)----(-7)
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N1K2J----150-----200-----300-----400-----600-----Auto Level
150------(0)----(+1)----(+1)----(+1)-----(0)
250-----(-3)----(-2)----(-1)----(-1)----(-4)
350-----(-4)----(-3)----(-2)----(-2)----(-5)
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Ki84-----150-----200-----300-----400-----600-----Auto Level
150------(0)----(+1)----(+1)-----(0)----(-4)
250-----(-2)----(-1)----(-1)----(-2)----(-6)
350-----(-4)----(-2)----(-1)----(-2)----(-8)
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P38J-----150-----200-----300-----400-----600-----Auto Level
150------(0)----(+1)----(+1)-----(0)----(-1)
250-----(-1)-----(0)-----(0)----(-1)----(-2)
350-----(-2)----(-1)-----(0)----(-2)----(-3)
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109G6----150-----200-----300-----400-----600-----Auto Level
150------(0)-----(0)----(-1)----(-2)----(-5)
250-----(-1)-----(0)-----(0)----(-2)----(-6)
350-----(+1)----(+1)-----(0)----(-1)----(-7)
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HurriI---150-----200-----300-----400-----600-----Auto Level
150------(0)-----(0)----(+1)----(+2)----(-5)
250-----(-2)----(-2)-----(0)----(-2)----(-6)
350-----(-4)---(-2.5)---(-1)----(-1)----(-7)
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Data Collection Tool.