How do you use the C-3053 burnishing tool?

I'm researching this process myself for I'm going to change mine out I'm looking into replacing it. I may be wrong but by definition I think that tool is misnamed. Burnishing is fitting by polishing. That seems more like a swage to me? You beat it with a hammer to form the size. That's swaging it. Couldn't you do the same thing with an old intermediate shaft?