APW Expander Mandrel Set

(6 customer reviews)


If the item is out of stock, there will be a +/- 10 day lead time.

The APW Expander Mandrel effectively smooths and gently expands the case neck, ensuring consistent neck tension. This method has proven to be the most straightforward approach to significantly reduce Extreme Spread (ES) and Standard Deviation (SD) figures.

Commercial die manufacturers often lack standardized specifications for the expander ball in their dies. This variance necessitates proper inside diameter sizing before seating. We recommend the complete removal of the expander ball from your resizing dies.

Your final step before powder addition should be to expand your necks using the appropriate expander mandrel. When employing the mandrels, we advise using Imperial sizing lube sparingly, as a little goes a long way. We employ a single-stage press to expand the neck on the downstroke, followed by packing the brass, now “ready for primer and powder,” into our APW reloading trays.

The die body is compatible with your standard reloading press, and the interchangeable mandrels are precisely sized. The kit comprises mandrels for achieving 0.001 or 0.002 neck tension, along with a base to maintain organization when not in use.

The original model is the bigger body and the revamped skinny body is designed to work with the Co-Ax press. Please ask for skinny body if you have a Co-Ax press.

Available on order - this product will need to be ordered from our supplier.

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The complete set includes mandrels for the following calibers:

  • .224 Cal: 0.223, 0.222
  • .243 Cal (6mm): 0.242, 0.241
  • .264 Cal (6.5mm): 0.263, 0.262
  • .284 Cal (7mm): 0.283, 0.282
  • .30 Cal (308): 0.307, 0.306
  • .338 Cal: 0.337, 0.336


  • Lead Times

    Current lead times on out of stock sets is 12-15 working days.

Additional information

Weight 1 kg
Dimensions 17 × 13 × 11 cm

6 reviews for APW Expander Mandrel Set

5.0 Rating
1-5 of 6 reviews
  1. Very fast and efficient delivery, Expander mandrel set fantastic quality and does the job perfectly I ordered an extra mandrel and this was added to my order with no fuss very good service definitely use impact pro again

  2. Not used at the time of writing the review but the service received from IPS was exceptional with clear communication, fast and efficient delivery.

  3. Ek het dit nog nie gebruik nie maar dit is baie mooi verpak en goeie bou kwaliteit.

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