Renowned Quality & Engineering Guaranteed!

SEB Shooting Products Australia are committed to supplying the finest quality products to Australian shooters. The SEB – NEO and MAX rests and the JOY-pod bipod are internationally renowned for their quality and engineering.

Previous Product Image

Cortina Precision Expander Mandrels

$ 65.00 inc. GST

AR-Hunter EC Tuner Brake

$ 400.00 inc. GST
Next Product Image

Expanding Mandrel Dies

$ 130.00 inc. GST

Expanding Mandrel Dies

$ 130.00 inc. GST

If we don’t have your size in stock, please let us know and we will order it in for you!

Add to Wishlist
Add to Wishlist
Trust Badge Image


The expander mandrel die holds the expander mandrels which.  Our expander mandrel dies are compatible with 21st Century expander mandrels or you can buy our expander mandrels!

Our dies are coated with Black nitride and are cartridge family specific.  What it means is that a 6BR will work with 6BR, Dasher, BRX, BRA, etc.  A 284 die will work with 284 Winchester, 284 Shehane, and any other variants of the 284 case.

Our expander mandrel dies size the base of the case the same way your Full Length sizing die would.  This helps align the case with the mandrel and also helps reduce “clickers” as brass ages.

How to set up our expander mandrel dies.

  1. Run press all the way up.
  2. Thread die onto press until the die touches the shell holder.
  3. Lock die down in position.
  4. Done.

Note:  You could also use the 6BR die in a 308 Winchester or any other cartridge with same case base diameter.  You would simply have to back the die off so that the case mouth does not bottom on on the mandrel. 

Additional information


.223 Remington/.300 Blackout, 6BR/GT, Grendel/ARC/PPC, .284 Winchester, 6.5 PRC/7mm PRCW, .308 Win/Creedmore/6.5×47 Lapua/XC, WSM, RSAUM

You may also like…

About Us


Subscribe to our Newsletter to hear about new products and exciting updates!

    About Us

    SEB Shooting Products

    SEB Shooting Products are the main Australian dealers for SEB Rests.

    We are a Brisbane based company, supplying precision accessories to Australian shooters.

    SEB Shooting Products - Important Information


    Subscribe to our Newsletter to hear about new products and exciting updates!


      Shopping cart


      No products in the cart.

      Continue Shopping