Originally posted by oboe
Finally, is AH's implementation realistic? Were non-tracer rounds entirely invisible?
Yes they were and still are. As many kills during WWII were from aircraft that were never seen by their victim, some of the more experienced pilots would remove tracers from their load-outs so if their first burst was a little off, the enemy wouldn't know they were being shot at.
Since most of the experienced pilots fired only at what we would consider close range (200-300 yds or less), having tracers was much less important to them as they really didn't need them.
I do think it gives you an advantage in the MA. That's why I fly with mine turned off. In the SEA during FSO, most of the time I turn them on, so I can clear my wingman's six by "scaring" the attacker off with a burst of tracer. I would like to keep the option, as I use it, and it has historical basis.