Quote:
Originally Posted by L473ncy
The reason why a longer barrel gives you an FPS boost is because the gas has a longer time to expand and force the BB to accelerate. This works to a certain extent though, once the gas has all expanded it doesn't matter if you add in a longer barrel it will max out at a certain FPS after all the energy from the expansion of the gas has been transferred to the BB.
Also you will see an accuracy increase but it only works to a certain extent. If one barrel is kinked slightly it will affect your accuracy even if it's longer, so straightness is important which is why "ABC companys" 6.01 mm barrel might be crappy and super kinked and make your shots inconsistent but "Big brand names" 6.04 mm barrel which is straighter might give you better accuracy.
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Do you know what is the minimum length of the barrel for the gas to expand?