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The Lyman 338 Expanding Button is a specialized reloading accessory designed to deliver precise and consistent neck expansion for 338 caliber rifle cases. Intended for reloaders seeking optimal bullet seating and uniform neck tension, this tool is an essential component for those reloading high-performance rifle cartridges. Its robust construction and compatibility with Lyman reloading dies make it a practical choice for both experienced handloaders and those refining their case preparation process.
Product Overview
Manufactured by Lyman, a trusted name in reloading since 1878, the 338 Expanding Button is engineered to ensure smooth, concentric neck expansion during the resizing stage. Crafted from durable, wear-resistant steel, this expanding button is designed to maintain precise tolerances, reducing the risk of case neck deformation and promoting consistent bullet grip. The tool is intended for use with compatible Lyman resizing dies, allowing reloaders to achieve repeatable results and improved accuracy with their 338 caliber rifle cartridges. Its straightforward installation and reliable performance make it a valued addition to any reloading bench.
Technical Specifications
Feature
Specification
Manufacturer
Lyman
Model
Lyman 338 Expanding Button
Caliber Compatibility
338 caliber rifle cases
Material
Hardened steel
Intended Use
Case neck expansion during resizing
Die Compatibility
Lyman resizing dies (338 caliber)
Installation
Threads onto decapping rod in die assembly
Finish
Polished for reduced friction
Functionality
Expands case necks to proper diameter for bullet seating
Country of Origin
USA
Category
Expanding Buttons & Decapping Pins
Further Product Details
The Lyman 338 Expanding Button is particularly useful for reloaders working with 338 caliber cartridges who require consistent neck tension for optimal bullet alignment and accuracy. It is designed to be a direct replacement or upgrade for compatible Lyman resizing dies, and can be installed by threading onto the die’s decapping rod. Routine inspection and occasional cleaning of the expanding button are recommended to maintain smooth operation and prevent residue buildup, especially when working with brass cases that may accumulate debris over time.
This expanding button is supplied as a single component and does not include additional die parts or accessories. It is important to verify compatibility with your specific Lyman die set before installation. As with all reloading equipment, users should adhere to local regulations regarding component use and reloading practices. Lyman products are covered by the manufacturer’s warranty against defects in materials and workmanship, offering peace of mind for users seeking long-term reliability in their reloading setup.
