25cal carbide expander ?

[Kestrel4k]

Does anyone make a carbide expander in 0.257" ?
Have converted/upgraded other more common Lyman & RCBS dies, but a brief search did not turn one up for the 257.
Thank you,

[Czech_too]

This might be what you're looking for, but pricey.
https://www.grafs.com/retail/catalog/product/productId/14712

[Kestrel4k]

This might be what you're looking for, but pricey.
https://www.grafs.com/retail/catalog/product/productId/14712
Thank you for that; the rep said they only work with the main class of Redding dies.
I needed a die set as well, so I guess I'll now have the Redding set. :-P
Best regards,

[ca_reloader]

RCBS uses a Titanium Carbo-Nitride sizing button for their Matchmaster dies. They won't sell just the button, you would need to purchase the complete de-cap assembly.

[lightman]

Sinclair/Brownells and K&M sell expanders that work in conjunction with neck turning tools but you have to buy the die to go with them.