Spitfire Gunsight adjustment?

[Pist-N-Broke]

Does the game use the 'Dowding spread'? Which effectively makes setting the gunsight for different ranges a waste of time (more like spray and pray). Under the 'Dowding spread' each pair of the eight .303's were harmonised for different ranges from somewhere from 200 out to 400 yards. This was done apparently because the RAF pilots demonstated such appalingly bad gunnery skills in range estimation when using early Barr and Stroud reflector gunsights, that the only way to do any damage at all was to spread the concentration of fire over as wider range as possible. It was thought it was better to get some hits, than get none at all.

I also believe that the 'Dowding spread' wasn't a pilot definable option. Some squadrons (#1 Sqn in France harmonised to 250 yards), but for the rest of Fighter Command squadrons in 1940 it wasn't an option.