Shotgun hulls only have value if there is load data for them. Like New Hampshire says, I've never seen data for these hulls. I understand they are French in origin, but I would not assume they are Cheddite. If you are looking for inexpensive hulls for reloading, look for 12 ga Remington Gun Club (green) hulls, which Hodgdon lumps together with STS and Premier hulls. I've also has success with the Remington black High Velocity hulls.