Just to close off the post...
So I fitted the UKNeil adaptor(very nice!) and bought the Weihrauch silencer and its perfect, pellets not clipping anything. Popped over to Petes Airgun Farm, consistency and accuracy havent changed once I re-zeroed it indoors(which I had never done before) I am really pleased with how quiet it is and if I need it quieter I could mod it. So hopefully now I can now tell when I hit an 8 yard target. One issue is the length (oh err!) and so the rifle is about 19cm longer and being the clumsy pillock I am I will have to be extra careful, oh yeh and if you are trying this at home boys and girls hopefully your gun bag wont be too short.