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Old 10-18-2013, 11:43 AM   #6 (permalink)
Hook
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Join Date: Jan 2008
Location: Gatineau, Qc

CCM Fan
Alright, I tried a stiffer hammer spring and a softer valve spring. I can get it between 280-290 fps, but only if I crank my regulator to 400psi.

That seems awfully high, unless I have some sort of high pressure valve I'm not aware of?
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