There is a fella that makes a jig specifically for cutting wads. Takes any guess work out of it and he makes them wad specific for desired depth whether it's a VP90, TPS, or any other wad you might be using. Ideal for garage loaders like a lot of us are. On the flip side GAEP makes a splitter for what I would consider the larger production scale. Chucks into a drill press, set it, get to splitting. Having one that cockeyed is pretty much unacceptable if consistency is desired with all the tools that are available to the loader whether it be sitting at his kitchen counter or loading at a grander scale for the masses.