I still laugh at effective ranges from a WW2 .50 cal at 1 kilometer, as they are in game (actually was killed at 1.5K the other day). I guess to make a good game, you make some concessions. <shrug>
Historically, 200 yards was already at the far edge of the effectiveness of bomber defensive armaments.
Yes and no. Well, actually more no than yes...
Yes, for of course a single WW2 gunner would have been relatively hard pressed to hit a moving target beyond 200yards. But so was the average fighter pilot. On the other hand, almost the same goes for the new to average AH player. What is getting constantly forgotten in such discussions here, is the fact that even after a few weeks, a player has
massively more practice in firing his gun at "live" targets than his WW2 counterpart.
And no: The effective range for defensive guns in heavy bomber sin terms of bullet trajectory was much higher than a mere 200yds. And remember: A bullet fired rearwards has an ballistic advantage. Usually, the effective range of .50 defensive guns was considered to be ~1000yds, not 200.
That's the reason why the Luftwaffe was frantically looking for weapons being able to engage the bombers at many hundreds and even thousands of yardss, well outside of the bombers defensive fire: 37, 50 and even 75mm guns, WGR, R4M rockets and ultimately guided missiles like the X-4.