Flak accuracy

[Al Schlageter]

One Luftwaffe study estimated it took over 3,300 88-mm shells to successfully shoot down a bomber.

There was 368 (heavy), 353 (medium), and 78 (light) guns in France, Belgium, Holland. These are only for the Luftwaffe.
http://www.taphilo.com/JG26/AA-defense-reich-WWII.shtml

"German Antiaircraft Defense" from Tactical and Technical Trends

The following U.S. military intelligence report on German antiaircraft defenses was published in Tactical and Technical Trends, No. 11, Nov. 5, 1942.
http://www.lonesentry.com/articles/t...t-defense.html

3.7 cm Flak 18/36/37/43
Effective range 4,800 m (15,700 ft) (anti-aircraft)
Maximum range 6,500 m (7,100 yd) (ground range)

Ah salmo, from Wiki, the Bofors 40mm L/70 wasn't accepted into Swedish service til 1948. You should be posting the spec on the L/60.

The flak model certainly needs improvement. At the moment, large calibre flak seems to just fire randomly within a certain volume of space which does not represent how flak actually operated in real life.

Actually that is what the heavy flak did, fire at a specific area of the sky.
http://www.lonesentry.com/articles/t...erman-aaa.html