Redding .340" Heat-Treated Steel Neck Sizing Bushing - Precision Reloading

When it comes to precision reloading, the Redding .340" Heat-Treated Steel Neck Sizing Bushing is an essential tool for achieving consistent and accurate results. Crafted from heat-treated steel, these bushings are designed to make the neck sizing process smoother and more precise.

Key Features of Redding .340" Neck Sizing Bushing

• Heat-Treated Steel: Redding's neck sizing bushings are made from heat-treated steel to ensure durability and longevity. The sizing diameters are hand-polished to reduce sizing effort.
• Wide Range of Sizes: Available in sizes ranging from .185" to .368" in .001" increments, you can find the perfect bushing for your specific cartridge needs.
• Proper Fit for Bullet: Determining the right bushing diameter is crucial for achieving the proper press fit for your bullet. Redding provides two effective methods for selecting the correct bushing size.

How to Determine the Proper Bushing Size:

1. Measure Loaded Cartridges: Measure the neck diameter of several loaded or dummy cartridges using an accurate micrometer. Subtract 0.001" from the cartridge with the smallest average measurement. This accounts for spring back and ensures a secure press fit for the bullet.
2. Measure Neck Wall Thickness: Measure the neck wall thickness of cartridge cases with a ball-type or tubing micrometer. Double this measurement and add the bullet diameter to calculate the neck diameter of a loaded cartridge. Subtract 0.001" from this figure to determine the bushing size.

It's important to note that the methods mentioned above are most effective when the cases have a fairly uniform neck wall thickness or have been neck turned. In cases where the neck wall thickness varies by more than 0.002", it may be necessary to use a bushing slightly smaller than calculated and then use a size button in the die to achieve the final inside neck diameter.

Elevate your reloading precision with the Redding .340" Heat-Treated Steel Neck Sizing Bushing. Whether you're a seasoned reloader or just starting out, this high-quality accessory ensures consistent results and optimal performance for your cartridges.