Hi Daniel!
WB/iEN experimented with all this, and they made a right buggery-suet of it - especially as implementation coincided with relocation, and the departure of most of their staff.
In WB, for a long time, you have had to get close - 300 yards or less - any plane, any ammo, but especially the 109 whose cannon dropped sharply - low muzzle velocity? The 109E was very bad for this. The trouble was that in WB, so often you would suffer a LCD - lag collision death. Closing to 200 yards (with a bit of lag thrown in) meant that you were often much nearer. Couple that with the fact that in WB, if your wingtip comes within 10ft of the bogie's wingtip, you get blown up.
In AH, the F4U-1C cannon is effective beyond 600 yards.

But the 109Gx needs to close to about 300 yards, preferably less.