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The Lyman 263 Expanding Button is a specialized reloading accessory designed for precision rifle cartridge preparation, specifically for 6.5mm (.264 caliber) cases. Engineered for reloaders who demand consistent neck expansion, this tool ensures optimal bullet seating and improved accuracy. Ideal for both experienced handloaders and those seeking to enhance case uniformity, the Lyman 263 Expanding Button is a practical addition to any reloading bench focused on 6.5mm cartridges.
Product Overview
Manufactured by Lyman, a trusted name in reloading since 1878, the 263 Expanding Button is crafted from hardened steel for durability and long service life. This button is designed to precisely expand case necks to .263'—the correct dimension for 6.5mm projectiles—helping to reduce bullet runout and promote consistent neck tension. Its smooth, polished surface minimizes friction and case wear during the resizing process, resulting in less stress on brass and improved case longevity. Compatible with Lyman sizing dies that accept interchangeable expanding buttons, this component is an essential replacement or upgrade for reloaders working with 6.5mm cartridges.
Technical Specifications
Feature
Specification
Manufacturer
Lyman
Model
Lyman 263 Expanding Button
Caliber Compatibility
6.5mm (.264 caliber) rifle cases
Diameter
.263 inches
Material
Hardened steel
Finish
Polished
Intended Use
Case neck expansion during resizing
Compatibility
Lyman sizing dies with interchangeable expanding buttons
Product Category
Expanding Buttons & Decapping Pins
Country of Manufacture
USA
Replacement Part
Yes
Further Product Details
Designed for straightforward installation, the Lyman 263 Expanding Button can be easily fitted into compatible Lyman resizing dies, enabling reloaders to quickly restore or upgrade their die sets for 6.5mm cartridge work. This component is particularly useful when switching between calibers or replacing worn or damaged expanding buttons, ensuring continued precision in case neck expansion. Regular inspection and occasional cleaning of the button are recommended to maintain optimal performance and prevent buildup that could affect case finish.
The Lyman 263 Expanding Button is supplied as a single unit; no additional tools are included. It is compatible exclusively with Lyman dies designed for interchangeable expanding buttons, so users should verify die compatibility before purchase. As with all reloading components, adherence to safe reloading practices is essential. In South Africa, no special licensing is required for purchasing reloading accessories such as expanding buttons, but users should ensure compliance with all local firearm and ammunition regulations. Lyman products are backed by the manufacturer’s reputation for quality, and support is available for technical queries or warranty concerns.
