Redding Neck Sizing Bushings .339"

The Redding Neck Sizing Bushings .339" (part number 76339) are precision reloading components designed to control neck tension during the cartridge resizing process. These hardened steel bushings are essential for shooters who demand consistent case neck fit and minimal runout—critical factors in achieving repeatable accuracy across multiple reloading cycles.

Each bushing is manufactured from heat-treated steel and finished with titanium nitride coating to increase surface hardness and reduce friction during sizing. This surface treatment extends bushing life and provides smoother operation in progressive or single-stage presses. The .339" diameter accommodates .338-caliber cartridges, making these bushings suitable for reloading .338 Winchester Magnum, .338 Lapua Magnum, and similar .338-class rounds. Redding offers neck sizing bushings across a comprehensive range of diameters from .256" through .338" to serve calibers from .17 to .338, allowing reloaders to select the exact bushing size that delivers the proper neck tension for their specific component dimensions.

These bushings are essential for reloaders working with precision rifle ammunition, long-range target shooting, or high-volume shooting disciplines where case longevity and consistency matter. Neck sizing—as opposed to full-length sizing—minimizes case working and extends cartridge case life by several reloading cycles. The compact design fits standard Redding sizing die bodies, making them a direct upgrade for reloaders looking to tighten their neck tension specifications or replace worn bushings. Serious handloaders who prioritize accuracy and case preservation choose Redding neck sizing bushings for their proven reliability and precision engineering.