Redding Case Neck Gage W/ Indicator

The Redding Case Neck Gage with Indicator is a precision measuring tool built for handloaders who demand uniformity in every round. If you're serious about ammunition consistency—whether you're chasing tight groups on the range or preparing hunting loads—this gauge lets you sort cases by concentricity and monitor neck wall thickness before they hit the press. The included large dial indicator reads in .001" increments, giving you the resolution to catch variations that matter in precision reloading.

Redding includes two mandrels with this gauge: a larger 3/16" diameter mandrel for standard cases, and a smaller 9/64" diameter mandrel designed for cases with .060" flash holes. The mandrels let you seat cases over the gauge body to measure neck concentricity directly. What makes this system flexible is the pilot stop system: you get 22 caliber and 30 caliber pilot stops in the box, but Redding manufactures stops for other calibers separately, so you can expand your gauging capability as your reloading grows. Each pilot stop is CNC machined from stainless steel with a slight undercut that seats snugly in the case mouth for repeatable, smooth readings.

This is the kind of tool that pays dividends in shot-to-shot consistency. Case neck runout—how much the neck wobbles when seated—directly affects bullet seating concentricity and velocity spread. By sorting cases before reloading or pulling loaded rounds that are out of spec, you're controlling one of the biggest variables in the equation. The Redding Case Neck Gage is built for reloaders who understand that precision starts with the brass.

Key Features

• Large dial indicator calibrated in .001" increments for precise neck concentricity measurement
• Includes two mandrels: 3/16" diameter for standard cases and 9/64" diameter for .060" flash hole cases
• Ships with 22 caliber and 30 caliber pilot stops; additional stops available for other calibers
• CNC machined stainless steel pilot stops with undercut design for snug, consistent seating
• Sorts cases by concentricity to improve ammunition consistency and precision

Specifications

Frequently Asked Questions

Can I use this gauge for calibers other than 22 and 30?

Yes. The Redding Case Neck Gage comes with pilot stops for 22 and 30 caliber. Redding manufactures pilot stops for other calibers separately, so you can adapt this gauge to your reloading needs by purchasing the appropriate stops.

What do the two mandrels do, and which one do I use?

The large 3/16" diameter mandrel works with standard cases. The smaller 9/64" diameter mandrel is specifically for cases with .060" flash holes. The mandrel seats inside the case neck so the dial indicator can measure how much the neck runs out (deviates from center) as you rotate the case.

How does this improve my handloading?

By measuring case neck concentricity before reloading, you can sort out cases with excessive runout and either set them aside or resize them to improve uniformity. Cases that are concentric produce more consistent bullet seating and bullet-to-bore alignment, which reduces velocity spread and improves accuracy—especially important for precision rifle and long-range hunting loads.

What comes in the box?

The gauge includes the case neck gage body with dial indicator, two mandrels (3/16" and 9/64" diameter), and pilot stops for 22 caliber and 30 caliber. A pilot stop is required for each caliber you want to measure; stops for other calibers are sold separately.