Black Mag'3 has a product in development that they showed at the Shot Show called Thundercharge. It is a solid propellant with a bullet attached to the top. Looks a little like the Hornady with pellets stuck on the stem except that it is all one piece. I'm not much of a pellet enthusiast but you asked and I know a little about the plans of Magkor. I understand that the bullet may be similar to a Powerbelt but probably will be developed specially for Magkor. I got this information second hand but I think it is reliable.