KM Custom Grind Expand Mandrel 27cal


SKU: C1132 Category: Tag:


KM Custom Grind Machined Expander Mandrels – for controlling case neck tension

Unlike the other calibres in these KM expanders these are actually list as the real or actual size they are. So that you can calculate from there how much springback may occur
  • These are special ground expander mandrels to be used for obtaining more precise bullet seating tension.
  • These are custom undersize expanders to help reloaders control neck tension better. Particularly when you are not doing outside neck turning of brass which uniforms wall thickness.
  • These custom expanders are available in 1/2 thousandths of an inch increments of BULLET TENSION being the size under (or less than) the calibre size.


  •  There are no Exchanges or Refunds on this item as manufacturer deems these non exchangeable.

Additional information

Weight 0.00 kg
Dimensions 0.00 × 0.00 × 0.00 cm