The Lyman Case Length/Headspace Gauge for .300 Winchester Short Magnum is a straightforward inspection tool for reloaders who need to verify case length and headspace after resizing. The gauge checks whether a resized bottleneck rifle case exceeds the maximum allowable dimensions or falls below the minimum allowable headspace. It provides a quick mechanical pass/fail assessment to help maintain safe, consistent ammunition components.
Key Specifications
- Intended caliber: .300 Winchester Short Magnum.
- Material: METAL.
- Type: CASE LENGTH/HEAD SPACE GAUGE.
- Overall dimensions: 1.35 X 3.05 X 5.90.
- Height: 1.3500.
- Width: 3.0500.
- Length: 5.9000.
- Size/Finish: .300 Winchester Short Magnum.
- Primary function: Case length and headspace verification.
Designed for practical case-prep workflows, this Lyman gauge helps reloaders identify cases that exceed maximum dimensions or exhibit excessive headspace so they can be removed from use. Its simple insert-and-check operation integrates easily into routine inspection steps, supporting safe, repeatable reloading practices without complicated setup.
This description was generated with AI and may contain errors. Verify specifications and legal restrictions with the manufacturer before purchase. Provided “as-is” without warranties or guarantees.




