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Basically a combination of what Mojo and pvt13 have posted is true, the turbulence thing very much exists, barrel suck also exists but is purely a small vacuum pressure exerted on the bb when the piston is at rest.
The turbulence created infront of the bb also exists, which is why ported barrels were invented to get around this problem, but as already discussed above can be alleviated by using a larger bore.
A shorter barrel is also more beneficial as it a) is not going to be subject to operator movement for as long as if contained in a longer one, and b) it is more beneficial in regards barrel volume vs cylinder volume vs bb overall weight.... a larger volume of air will shift a heavier bb easier down a shorter barrel
Hope this helps
VA
The turbulence created infront of the bb also exists, which is why ported barrels were invented to get around this problem, but as already discussed above can be alleviated by using a larger bore.
A shorter barrel is also more beneficial as it a) is not going to be subject to operator movement for as long as if contained in a longer one, and b) it is more beneficial in regards barrel volume vs cylinder volume vs bb overall weight.... a larger volume of air will shift a heavier bb easier down a shorter barrel
Hope this helps
VA
