Significant velocity drop off

[adm3745]

I have an automag classic with the ULT trigger and a nitro tank with about an 800psi output. When i shoot single shots i have consistent velocity but as soon as i start rapid fire the velocity falls. After 3 or 4 balls the balls are barely going 40 ft. I think it should recharge much faster than it is. Any suggestions?

[Coralis]

Well you check the following .... Kinked air hose to the valve , recharge rate of the bottle is low ( this could be cause by the on/off pin on the bottle being pushed in too far or not far enough, the regulator spring in the valve binding on something (teflon tape etc.) or could need some oil run through the valve.