Ok great I'll try it with my dies once I find them in storageShould come with the die. Same plug as a SWC, usually; has a ring that hits towards the outer edge of the bullet face.
Edit to add: You can probably use a round nose seater as well, if it has an outside diameter of less than .300 or so (32 SW/SWL uses diameters from .312ish to about .315".) You can also fill the RN cavity in the seater with epoxy and end up with a completely flat seater plug.

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