Redding Instant Indicator Headspace and Bullet Comparator Without Dial Indicator 7mm PRC

The Redding Instant Indicator Headspace and Bullet Comparator for 7mm PRC is a precision reloading tool built for handloaders who need to measure headspace and seating depth with confidence. This version ships without a dial indicator, making it the right choice if you already own a compatible dial indicator or want to pair it with your preferred measuring instrument. Redding's comparator inserts let you reference bullet seating directly to the rifling, so you can dial in repeatable, accurate loads rather than guessing at depths.

Serious 7mm PRC reloaders know that tiny variations in headspace and bullet seating add up downrange. This tool gives you the ability to make those measurements in your shop, on your press, without breaking the bank on a full kit if you've already got the dial piece you need. The modular design means you supply your own 0.375" stem diameter dial indicator—a common spec if you're already equipped for precision reloading work.

Whether you're working up loads for a new 7mm PRC rifle, verifying chamber dimensions, or fine-tuning seating depth for match performance, this comparator removes guesswork from the equation. It's a one-time investment that pays dividends across every box of ammunition you reload.

Key Features

• Measures headspace and bullet seating depth to the lands
• Caliber-specific insert for 7mm PRC
• Sold without dial indicator—pair with your own compatible 0.375" stem dial
• Allows direct-to-rifling bullet seating reference for repeatable loads

Frequently Asked Questions

What dial indicator do I need for this comparator?

You'll need a dial indicator with a 0.375" stem diameter. If you already own one, you can use it with this Redding comparator without additional purchase.

Is this tool caliber-specific?

Yes—this version is configured for 7mm PRC. Redding offers Instant Indicators in different calibers, so verify you have the correct insert for your cartridge.

Can I use this to measure both headspace and bullet seating?

Yes. The Instant Indicator is designed to measure both headspace and seating depth to the lands, making it a versatile tool for 7mm PRC reloaders.