How would this mold be used?

[lancem]

I've never seen one adjustable like this and with no lube grooves is this for PP?

http://www.ebay.com/itm/RARE-ADJUSTABLE-LYMAN-SINGLE-CAVITY-BULLET-MOLD-MOULD-257-/121258159040?pt=LH_DefaultDomain_0&hash=item1c3b8cabc0

[Spawn-Inc]

I would say it's for paper patch and different weights by turning the screw in and out.

Could also use it for cores for swaging.

[Dschuttig]

I was wondering that myself. I've never seen anything like that in any of my old ideal books, perhaps custom made on old ideal blocks?

[Doc_Stihl]

Paper patch.
That doesn't look factory to me.

[leadman]

The adjustable base Lyman molds I have seen and the one I have the screw is smaller. Probably a 10-24. I do have an old Lyman core mold and am thinking of making a new adjustable base for it and turn the base into the nose. It would work good with Hi-Tek coating in a 30 caliber gun.

[bhn22]

It doesn't look factory to me either. It kinda looks like it is perhaps a rebored core mold. The cavity seems a bit short for a .40 Paper Patch. If it said "Ideal" on it instead of Lyman, it would be easier believe. Regardless, it's a cool mold, and I've wasted more money on less.