Yeah the particles were colliding with the shards but not causing them to move which I wanted so therefore they were bouncing off them!

When I started a new scene, created the shards then created the particles it worked fine, when I do it the other way round the particles jsut bounce off the shards.

seems a bit strange but hey its going now and looking good to boot!!

Cheers for the advice Razer blade, but I dont want to add too many fields where possible so I was just goig for the particle to rigid body collision route