Usually between 190-200 hpr and 70-80 LPR is a good starting point, then tune as needed over the chrono.
Every gun is different however so you have to do some work yourself. Look on page 4 of the stickies for Lurker's sweetspotting method, that's the best way to set your gun up.
This line is in remembrance of Jared Wilson, friend and paintball teammate who died on 7/27/2005.
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