Losing velocity during rapid fire.

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  • jpgeorge
    Registered User
    • Aug 2001
    • 1
    #1

    Losing velocity during rapid fire.

    I am shooting an AutoMag with CO2 and a small vertical expansion chamber.
    If I pull the trigger too fast I can hear the pressure drop. It goes "POP" "POP" "SPUTTER" "SPUTTER" "cough" "cough" then if I wait a second and pull the trigger at about 2 pulls per second it is fine again.

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    • XspyX
      I sleep naked!
      • Jan 2001
      • 1556
      #2
      Replace your reg seat and buy an angled bottomline if you don't have on allready.


      Does it smell like updog in here to you?
      Originally posted by Automagisurdad
      and the barrel is no good cause its a 14 and not 12.

        Comment

        • 68 Mag
          Registered User
          • May 2001
          • 262
          #3
          Actually, I think it's just shootdown from using co2. Try borrowing a screw- in HPA or N2 tank to use before replacing things.

            Comment

            • XspyX
              I sleep naked!
              • Jan 2001
              • 1556
              #4
              I doubt it, thats a reg seat problem. I've had that same thing happen to me alot, reg seat is the solution.


              Does it smell like updog in here to you?
              Originally posted by Automagisurdad
              and the barrel is no good cause its a 14 and not 12.

                Comment

                • ZeroXtreme
                  From ZERO to Extreme...
                  • Jul 2001
                  • 142
                  #5
                  It could be caused by a number of reasons.

                  1. Your expansion chamber can't handle the load, especially if you are playing in cold weather.

                  2. You aren't releasing the trigger all the way, meaning you pull it again before it reaches it's full forward position. I've noticed that there has to be a sort of rhythm to fire a mag rapidly.

                  3. Your power tube oring needs a replacement.

                  Black Teflon E-Mag
                  v1.37 (EM01478)
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                    Comment

                    • Army
                      Moderator of DOOOOOOOOMMM!

                      • Oct 2000
                      • 5785
                      #6
                      Just Co2 freeze-up is all. Slow down your rate of fire to 3-5 a second, long strings can't be done with Co2. You can get a larger expando and/or a remote to alleviate most of this problem. The Palmers Stabilizer is a good alterative to an expando, as it was designed to keep liquid out of your gun.

                      Good luck!

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