Originally Posted by Ojay72
Ok I just got word back from Eric (Tech Service) at WGP who consulted with Jeff Orr himself on my farting question. The quacking sound is the result of ALL the air pressure being exerted on the ball in a pump gun. When you let go of the pump handle and shoot, the bolt moves back a bit (recoils) and produces that quieter shot sound as in autocockers. In that situation, some air pressure exits up the feed tube and out the back block since the bolt is no longer fully forward/closed at that instant and reduces or eliminates the quacking. In an autococker, the pneumatics start pulling the bolt back/recocking so fast that this phenomenon is replicated. So basically you want your Sniper to QUACK so that you know you are getting max efficiency. Taking a shot over the chrono with your hand holding the pump handle forward and producing the quack chronos higher and more consitently than letting go of the pump handle for a quieter shot.
All your posts pretty much back up Jeff Orr's explanation.
Thanks, that was just the info I needed.