Spring loaded mold?

[Whistler]

Found this on a German auction site, there is no description more than "6mm and 9mm mold".

I'm thinking it might be for making cores for swaging. Interesting design in any case. Anyone seen it before?

http://egun.de/market/uploaded/3787498_4f6cb16f2b77c.jpg

[Chicken Thief]

Made one myself for Mauser 1871/84 PP boolit:

http://i295.photobucket.com/albums/mm153/Chickenthief/Skydning/Mauser%2071-84/R0010768.jpg