21st century neck up mandrels?

[TrxR]

Does anyone know if the 21st central neck up mandrels will fit in a PMA expander die?

I did a bunch of cases in one step with my pma 6mm to 30cal mandrel but want to try adding atleast one step in between next time like going to 6.5 then to 7 the 30 or just from 6 to 7 then 30cal but pma dont offer the steps in between.

Thanks

 

[wang243]

I have a Sinclair and a 21st, they all fit fine. Even PMA mandrels fit.

 

[ppaul]

Yes!