Jrm52 - Joel Penney, out in California, used to cast several Jet bullets in linotype. I bought a couple boxes from him, and intended to try them in the 1500 FPS range. At that time, I was so frustrated with the Jet in general that I didn't want to make things worse, so I set them aside. They are probably still hiding in my basement somewhere. I do not know if Mr. Penney is still casting, or how to get a hold of him. If there is interest, I might be able to go through my old papers and see if I can find an address and phone number.