A strange grass, a puparium and ichneumon or perhaps a sawfly?? All are causing much head scratching
I'd suggest Coleophora kuehnella for the puparium.
Thanks for the links Peter. Certainly looks like it could be that.
No info on the naturespot galleries for it.
I have another 'pistol' you may be able to help me with. I will post it new above.
All the best