What PVT13 is speaking of is called "Barrel Suck" which has already been proven to be a myth. It is most commonly associated with an AEG. (I will provide Documentation if you wish but it has been pretty widely known to be false) So don't even worry about turbulence and pressure in the barrel. The BB moves so quickly out of the barrel then the real forces take hold. The real thing that truly affects Accuracy is Hop-Up.
The reason you may want to use a TBB is to raise your FPS... but that's about it.
The reason you may want to use a TBB is to raise your FPS... but that's about it.
