Quote:
Originally Posted by The Kraken
I don't think that's a factor here. Temperature and air humidity come into play with water-vapor related effects like contrails or visible wing tip vortices. Smoke however are unburnt particles which usually dissipate quickly, regardless of the atmspheric environment.
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I don't think its vapour either..
You get smoke off some tracers but not all (even the same type). If you watch any gun camera footage you can usually see some smoke, also you can get defective tracer which burn unevenly causing the round to spiral and on top of this the air flow can disrupt the flight of the rounds. The SoW tracers are pretty good but maybe a little too pure(?) in flight.