RCBS 15530 Neck Sizer Die Group A .308 Winchester Reloading Die

The RCBS 15530 Neck Sizer Die delivers precision neck sizing for .308 Winchester cases while maintaining optimal brass life and accuracy. This Group A die sizes only the neck portion of fired cases, preserving the fire-formed body dimensions that perfectly match your specific chamber.

What Makes This Different

Unlike full-length sizing dies that work the entire case body, this neck sizer only reduces the neck diameter to properly grip bullets. The process maintains the fire-formed case body that already fits your chamber perfectly, reducing brass stress and extending case life significantly. Cases sized with this die typically achieve 2-3 times more reloads compared to full-length sizing, while delivering enhanced accuracy through consistent chamber fit.

Key Features

• Sizes neck only - preserves fire-formed case body dimensions
• Heat-treated steel construction with precision-ground interior surfaces
• Standard 7/8-14 threading fits all major reloading presses
• Group A classification for .308 Winchester cartridge family
• Includes sizing die and detailed reloading instructions
• Compatible with RCBS shell holders and accessories
• Extends brass life by 200-300% over full-length sizing

This neck sizing approach proves particularly effective for bolt-action rifles where cases return to the same chamber repeatedly. Match shooters and precision reloaders rely on neck sizing to maintain the exact case-to-chamber fit that fire-forming creates. The reduced working of brass eliminates unnecessary stress on case walls and necks, preventing premature splits and maintaining consistent internal capacity for powder charges.

Technical Specs

• Caliber: .308 Winchester
• Die Classification: Group A
• Thread Size: 7/8-14 TPI
• Material: Heat-treated alloy steel
• Finish: Black oxide coating
• Compatible Shell Holder: RCBS #3
• Country of Origin: United States
• Manufacturer: RCBS

The RCBS 15530 represents the standard for precision neck sizing in .308 Winchester. Manufactured to RCBS quality standards with decades of proven performance, this die produces consistently sized cases that chamber smoothly and shoot accurately. Serious reloaders choose neck sizing when maximum accuracy and brass longevity matter most.