The Accu-Ring is a sizing/seater die lock-ring which provides reference marks in increments of thousandths of an inch (0.001”).

• Sizing die (primary use) – Designed mainly for sizing dies the Accu-Ring helps you zero in on what you want the headspace length of your cases to be.
• Seater die (secondary use) – The Accu-Ring also allows you to make fine adjustments to bullet seating depths.