Redding Neck Sizing Die for Bottleneck Cases 6.5mm GAP 4S

The Redding Neck Sizing Die for Bottleneck Cases 6.5mm Grendel is a precision reloading component designed for shooters who demand consistency and accuracy in their handloaded ammunition. Built by Redding Reloading Equipment—a name trusted across law enforcement, military, and competitive shooting communities—this neck sizing die addresses the specific requirements of 6.5mm Grendel bottleneck rifle cartridges.

Proper neck sizing is essential for reliable chambering and optimal ballistic performance. Redding's neck sizing dies employ precision-engineered steel construction with hardened sizing surfaces that ensure uniform case neck diameter reduction without introducing runout or inconsistency. The die is calibrated to size only the case neck—leaving the shoulder and body untouched—which extends case life and maintains superior dimensional stability shot-to-shot.

This selective sizing approach is favored by precision rifle competitors and military armorsmiths because it preserves brass hardness in critical areas while achieving the neck tension necessary for consistent bullet seating and reliable ignition. The compact footprint (2.25 × 1.9 × 5.12 inches) and moderate weight (0.52 lbs) integrate seamlessly into any standard reloading press setup. This die is essential for reloaders working with 6.5mm Grendel cartridges, whether developing match-grade loads for long-range precision work or maintaining tight ammunition tolerances for duty use.