I know this is an old thread, but this here cannot be overstated. What I see on Ebay are Lee 224 sizer dies that have been opened up with something like a Dremel grinder. You need something that takes the 0.224 brass down to 0.220 so that there is enough difference in diameter to swage back out to 0.224". What slays me is how much the modified Lee sizers are fetching. My RCECO one was $85. I am sure it is a stocked item as common as 22cal is.