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Old 01-13-2012, 12:30 PM #1
jnapro
 
 
Join Date: Feb 2011
jnapro owns a Planet Eclipse Geo
Help BT4 not getting up to speed

Hi Guys need some help for a freind. He has a BT4 that just refuses to get up to 300 fps, we have pollished the internals replaced orings put in a heavy velocity spring and shimmed it so the spring does not slide back into the stock, he is running hpa not co2. I did measure the stock barrel and was very surprised to see how big it was .710. Any ideas?

Thanks
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Old 01-13-2012, 08:46 PM #2
tonycon
Knuckleheads Paintball
 
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Location: Chi-Town
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Take the valve apart and clean/oil it. Get a different barrel.
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