Air Venturi Avenge x .177 suddenly shoots innacurately

Its an Avenge X Classic synthetic I have. Dont know if the trigger is any different. Also I tried to shoot some groups today. The JSBs 10.34 Diabolo shoots great overall, but the Crosmans 10.5 seem to do well now that I have tightened everything down in the barrel. But both the Crosmans and the HN Barracuda I tested both shot way to the left of the target. Same scope, same distance, same fill. Why is that so?

View attachment 512246
It is quite normal that different pellets are shooting different, up, down - left or right. You just pick the most accurate group and adjust your scope zero for it.
 
Its an Avenge X Classic synthetic I have. Dont know if the trigger is any different. Also I tried to shoot some groups today. The JSBs 10.34 Diabolo shoots great overall, but the Crosmans 10.5 seem to do well now that I have tightened everything down in the barrel. But both the Crosmans and the HN Barracuda I tested both shot way to the left of the target. Same scope, same distance, same fill. Why is that so?

View attachment 512246
You will also see that H&N Baracuda FT shoots well in the Avenger.
If you are using the original magz - accuracy will also go down. You need something more smooth like:
20231010_222741.jpg
20231010_223457.jpg
20231010_222827.jpg