What would cause my Impact to start shooting at lower FPS. I shot it through my chrony today and went from shooting 885 in .25 with my valve at 4 and the wheel at 4 to 780 with the same settings. I'm not losing air and my reg is right at 150 (where it was when it was shipped to me). So I throw my .30 barrel on and change the probe, keep my valve at 4 and change the wheel to Max. I had been shooting 850fps with these settings, but today I was getting around 710fps. Any ideas?? Breech o-ring maybe??
Thanks
-Brad
Thanks
-Brad