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Adjust Your Velocity Up or Down
© 2008 David Muhlestein licensed to About.com, Inc.
If your gun is shooting to fast, either lower your regulator's pressure (if you have a regulator) or else decrease spring tension on the hammer. If your gun is shooting to slow, raise your regulator's pressure or increase the spring tension on the hammer. After you have adjusted your gun, dry fire several times before you shoot another ball. If you have an electronic gun, this may require you to disable your gun's eyes before dry firing. Reload your gun with one ball and then chrono again. Repeat this process until your gun consistently shooting at a safe speed.