Quote:
Originally Posted by lurkingknight
how long and tight of a barrel are we talking here? a full cylinder can push enough air for a 600mm barrel.
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Might be able to step up cylinder size if you have a ported cylinder and switch to a widebore. All I know is with a PTW, same barrel length, in a wide bore, 30fps loss.
Without thinking about it too hard, having extra volume might help, but it's not a volume problem so much as an air leak problem. More air escapes around the BB.
Quote:
Originally Posted by paulwes83
but I'm not sure if there is a general rule for achieving good accuracy because it would all depend on barrel length.
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This is not real steel. Barrel lengths beyond a certain length mean absolutely nothing.
Ever wonder how it was possible that a stock GBB pistol with a 4" barrel could match the range and accuracy of a stock M16 AEG?
Once the BB has centered itself in the barrel, it's centered. And no extra length of barrel is ever going to get it any more centered than it already is.
Amos and I built twin VSR-10s, he had a 650mm barrel and I had a 380mm barrel, and our accuracy was exactly the same.
With R-hop, due to it putting less pressure on the BB, people have said as short as 247mm can have fantastic accuracy.
And on PTW's there are plenty of reviews of people having better range and accuracy with 10" CQB barrels over 14.5" M4 barrels.
Just as well, systema does not make a 20" M16 length barrel because of this. All their M16s come with 14.5" barrels.
The ONLY things that matter in range and accuracy are this;
mechbox compression
hopup quality and seal
barrel quality, not necessarily bore, and length really doesn't matter beyond 420mm, shorter with Rhop
BB quality
and that you use the proper weighted BB for your fps range