Trumpeter have provided a very good selection of ordnance for their Mk II Swordfish, the torpedo, flares and sea markers being nicely done. The bombs however are not very accurate in shape, so I have modelled several types of bomb and depth charge to give me a broader selection. I used the 3D CAD software Rhinoceros (www.rhino3d.com) to design the shapes, and then had the models built on a 3D printer. This is quite an expensive process, but allows extremely fine detail, as well as accurate profiles. 

These are the initial designs for a 250 lb Mk VIII Depth Charge, 120 lb AS bombs, one with the anti-skip nose, a 250 lb SAP bomb, 250 lb MC bomb, a then 250 lb GP and 120 lb GP bombs.