7. Mandrel your brass: Using an expander mandrel for consistent neck tension

A Mandrel die is a way to have consistent neck tension. Sizing your neck from the inside eliminates variables and provides for better SDs and groups sizes. This is for my 6mmBR Match ammo I shoot in PRS (Precision Rifle Series ) matches. #reloading #6BR #rifle #competitiveshooting #brass #precisionrifle #precisionrifleseries #prs #nrl