ive had a few hundred pellets through my new ultra xl and accuracy is starting to get good , at 30 meters im grouping inside a 5p bit with out a silencer. but silencer attached its about an inch and a half group , theres no clipping , tried a deben whisper and swift stumpy both with same results, silencer off and its straight back to 5p size . any one know whats going on ? or do i just need to run it in fully ? with the ultra i can live without a silencer as its not my main gun and will be used at ranges only