Description
- Machined from high-quality tool steel
- Available in .0005" diameter increments
- Hardened and precision-ground to their final diameter
Precision Expanding Mandrels are machined from high-quality tool steel which is then hardened and precision-ground to their final diameter (size marked on head). They are available in .0005" diameter increments ranging from .0005" thru .0030" below nominal bullet diameter so that neck tension can be fine-tuned to suit the handloader's preference.