Redding Reloading Series C Neck Sizing Die Features The Redding 6mm GT Neck Sizing Die includes a decapping rod assembly paired with a neck expander often called a size button that resizes the inside of the case neck to the correct dimension for seating a new bullet. Because the die works on the neck of the case only rather than resizing the full body it reduces the amount of brass working each firing cycle puts the case through. This approach is favored by precision reloaders shooting the same rifle repeatedly since it helps maintain consistent neck tension and extends usable case life. The Series C design reflects Redding s established reloading die lineup known among reloaders for tight tolerances and repeatable results. A shell holder is required to use this die but is sold separately with Shell Holder #1 specified as the correct match for 6mm GT cases. This separation lets reloaders purchase only the shell holder they need rather than paying for a bundled accessory they may already own. Neck sizing dies like this one are particularly well suited to bolt action rifles fired in the same chamber each time where full length resizing is less necessary. Precision reloaders working up loads for 6mm GT will find this Redding neck sizing die a precise tool for consistent case preparation. Redding Reloading Series C Neck Sizing Die Specifications Manufacturer: Redding Reloading Model: Series C Neck Sizing Die Caliber: 6mm GT Die Type: Neck Sizer Die Available At: GrabAGun