Here's my attempt! The bullet is a couple of poser primitives - a cylinder and a stretched sphere. For the trail I tried my idea mentioned above using flattened spheres - in this case a value of 20% was used, Some global slight variations to the spheres were also done. I didn't have time to mess with Poser 5's material room so the material shown is a simple transparent one. With more effort the results would have probably been better. Then in Paint Shop Pro I just added some motion blur. Seems like flattened cylinders (with a suitable material!)are the way to go in Poser