I have all I wanted to do to the .25.I have a heavy hammer spring and TT tophat , believe it or not the red flash light doesn't even show up in the scope view.I have it shooting the Benji domes at around 850fps and the Eunjin 43.2gn at around 930fps.
Really haven't shot any long shot strings with it.Will shoot some and post tomorrow with both QCTH settings.