[SG1_Lud]

Here my observations:

First of all, your test may indicate that the code is computing IAS instead as TAS as it should. That would be the only valid explanation of why when you use IAS, yo are closer to the target, and when you use TAS, the bombs are short to the target.

So yeah maybe this is a bug. Can you pass me the mission to do test myself. I would like to hear blackdog_kt, and T)(or opinion too about this.

OK, the rest of my observations:

* You were not releasing at the exact speed. I read 265 instead of 270 Km/h. 5 km/h could introduce several meters of error (bombs will impact before the intended point) so you have the bombardier has to take that in account when fixing the crosshairs over the target.
* You were not releasing at exactly 2.000 m, but 1975m. That introduces several meters more (accumulates to above error)
* Have you taken in account wind... if there was a north component of it, this would introduce a new error with the same effect than the above.

The first two, blame your pilot (lol).
AS for the wind, you cannot know, but then: dont use 0 m of distance in the bombs. If you are releasing 4 pairs, divide the total lenth of the target by 4 and maximize your chances of 1-2 hits, intead of trying to concentrate your fire.

Hope it helps