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Old 8th February 2010, 06:47 AM
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villiers villiers is offline
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Join Date: Nov 2008
Member of: Bisley
Location: Uxbridge UB8
Posts: 820

In my one the reg pressure would creep up if you left it , first shot would be 680 fps the next 730fps then 785 if i fired a shot every minute .If i left it for 5 minutes or the time between lanes,i would have to dump a shot before i would sit down to shoot a lane,so on a GP 50 shot course thats 25 more shots i would use.
The gun did not lose air ,just the pressure was high on the first shot and the knock open valve was unable to open the correct amount.So the air was leaking between the high pressure cylinder to the lower fire chamber pressure were the knock open valve hammer section work.
It is a known problem with AA,i try for a year with them i gave up and went back to the Walther
Gone racing
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