So earlier there was a post about cold-iron alchemical bullets, and the discussion went in the direction of blanching which is not allowed. That is understandable. However can the bullet used inside the alchemical cartridge be cold iron?
Mike commented on this and mentioned this as a custom item, but does it have to be custom?
Cold-Iron seems to be a key-word which can be applied to certain weapons. I believe you can get cold iron bullet (not alchemical). I don't see why you can't purchase cold iron alchemical cartridges from a vender. Especially with the Year of the Demon, I would think weapon venders might see it as profitable to make alchemical cartridges using cold iron. It would probably be a hot item.
Again, this is not regarding blanching the cartridge.