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Old August 17th, 2013, 03:22   #2
badrelko
 
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Join Date: May 2013
Location: kingston, ON
As regards to the barrel length as you increase the length you will need to bore up your piston so there will be enough air to keep pushing the bb until the end of the barrel.

What does affect velocity is the diameter of the barrel for example a 6.05mm barrel which shoot at a slightly lower fps than a 6.01mm inner barrel.

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