RED EXPANDER MANDREL 0.2540 (.257 Cal)

Redding Precision Expanding Dies are machined on CNC Lathes and heat-treated to ensure dimensional integrity and durability for a lifetime of use.  The unique angled alignment surfaces of the Die Body and Mandrel ensure perfect alignment when assembled and secured with the threaded retention plug and lock ring.

Precision Expander 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.

Pair with the Redding Expander Die Body

Or Add to your purchase of a Redding Expander Die Body with a Mandrel

22 Cal with 0.2230 Mandrel

243 Cal / 6mm with 0.2420 Mandrel

257 Cal with 0.2560 Mandrel

264 Cal / 6.5mm with 0.2630 Mandrel

277 Call / 6.8mm with 0.2760 Mandrel

284 Cal / 7mm with 0.2830 Mandrel

308 Cal with 0.307 Mandrel

338 Cal with 0.3370 Mandrel