What is this die?

[GeneT]

I've been reloading for many years, and thought I'd seen it all, but I can't figure this out for anything. A friend sent me the pics. He said the "nipple" in the end is about the diameter of a small primer. No markings on the die, but it's standard 7/8"-14. 0.487" ID on the main body.

Any help appreciated.

TIA,

GsT

 

[rsmithsr]

crimp remover/swager..primer pocket

 

[GeneT]

crimp remover/swager..primer pocket

I considered that, but it's "upside down" - what's going to push a case up base first? Why would the piece with the nipple on it move independently of the stop?

GsT

 

[Fuj]

I'm thinking a bullet jacket cup draw punch. If those are stacked belleville washers,
probably used as the stripping mechanism instead of a positive knock out rod.
Either way, there would have to be be a die to go with it.......