I had one several years ago. I gave it away as soon as I realized I could shoot with much greater precision without the Lead Sled, shooting prone with a bipod. For those that are thinking about using one for load development, just be aware that it does NOT take the shooter out of the equation. The POI of a rifle clamped down in a Lead Sled will shift around just like it would if it was being improperly manipulated without one. In other words, the rifle will still be responsive to what you do behind it. The Sled may (and I emphasize "may) reduce movement ever so slightly, particularly if the driver doesn't follow good fundamentals, but you still have to drive the rifle when it is sitting in one. Caveat emptor.