Redding Instant Indicator Headspace and Bullet Comparator, .223 Rem

The Redding Instant Indicator Headspace and Bullet Comparator in .223 Remington (Redding part no. 17111) is a precision tool for measuring two things handloaders care about most: case headspace and bullet seating depth relative to the rifling’s lands. The insert-and-stem system is built around a standard 0.375 inch stem dial indicator, so you can track shoulder bump and seating depth in thousandths of an inch instead of guessing.

Key Specifications

• Chambered for .223 Remington.
• Measures case headspace, letting you track shoulder bump precisely between firings.
• Measures bullet seating depth relative to the lands, not just to the case mouth.
• Uses an insert-and-stem system compatible with a standard 0.375 inch stem dial indicator.
• Readings resolve to thousandths of an inch (0.001 in.) for precise, repeatable measurements.

Frequently Asked Questions

What does this tool actually measure? Case headspace and how far a bullet’s tip sits from the rifling’s lands when seated, both in thousandths of an inch.

What size dial indicator does it use? A standard 0.375 inch stem dial indicator.

Buy the Redding Instant Indicator Headspace and Bullet Comparator, .223 Rem

Order the Redding Instant Indicator Headspace and Bullet Comparator, .223 Rem from our Lubbock, Texas gun shop for fast, insured shipping straight to your reloading bench. Stock up now so you are never stuck waiting on components mid-session, and browse the rest of our reloading tools lineup while you are at it — from Redding and every other maker we carry.