I think I have a good plan for missiles.Just get a dowel with that diameter, and mold the cone,and the rear part out of epoxy putty.
That should do the trick.Use a pencil to add the little holes, and strips of lighter wood for the shaft.
Cheap, and easy, and I will bet that it looks just as good.Even better if I can get a hold of a metal tube with that diameter, then I can get to the hobby store for aluminum peices for the shaft.even better.