The Redding 338 Lapua Mag Instant Indicator with Dial (part no. 27594) is a dial-indicator comparator from Redding that measures 338 Lapua Mag case shoulder position against a reference case, letting handloaders read exactly how much a full-length sizing die is bumping the shoulder back in thousandths of an inch. Dialing in the right amount of shoulder bump, rather than guessing, is one of the most important steps in precision full-length sizing, since too little leaves brass tight and too much shortens case life and can hurt accuracy.

Key Specifications

• Measures 338 Lapua Mag case shoulder position with a dial indicator.
• Reads shoulder bump in thousandths of an inch for precise die adjustment.
• Used to dial in a full-length sizing die rather than guessing at shoulder bump.

Frequently Asked Questions

What does this tool measure? It measures 338 Lapua Mag case shoulder position with a dial indicator so a handloader can read exactly how much shoulder bump a sizing die is producing.

Why does shoulder bump matter? Too little bump can leave sized brass too tight to chamber easily, while too much shortens case life and can hurt accuracy, so precision reloaders dial it in carefully rather than guessing.

Buy the Redding 338 Lapua Mag Instant Indicator with Dial

Order the Redding 338 Lapua Mag Instant Indicator with Dial from Schaefer Defense’s reloading equipment selection. Our Lubbock, Texas gun shop ships fast, so serious handloaders can keep their reloading bench stocked with the exact tooling their process calls for.