Cheers for your advice fortis, but I woke up this morning after having spent hours and hours on it last night and realised that i had modelled my model in blender wrong and that all i had done was extrude the barrell vertices at the end to create a flap at the end so to speak, rather than having a full cylinder within the outside cylinder so to ...

I will keep this as simple as possible. I have created a model of a gatling gun in blender. (free 3d modeller) Gatling gun has hollow barrels through which bullets fly and come out of. I have exported it into an fbx format and successfully loaded it in xna. Picture of what it should look like from blender: Picture of what it ...