The Lyman Split-Lock Die Locking Ring (Model: LY-DLR / MPN: 7631304) is a heavy-duty steel replacement lock ring designed to secure reloading dies at an exact, repeatable height within your reloading press. Unlike traditional lock rings that rely on a set screw tightening directly into the die threads—which can easily mar, deform, or strip the threads over time—this Lyman design utilises a split-ring mechanism. By tightening the integrated cross-bolt, the ring clamps evenly around the entire circumference of the 7/8"-14 threads. This provides a secure, non-slip hold that preserves your precise headspace and bullet seating depth adjustments, even when removing and reinstalling dies between reloading sessions.

Key Features:

• Thread-Safe Split-Lock Design: The clamping action is distributed evenly around the die body via a cross-bolt screw, eliminating direct screw-to-thread contact and preventing thread damage.
• Preservation of Settings: Once locked in place, the ring ensures your exact die adjustments remain unchanged, allowing for consistent ammunition sizing and seating across multiple reloading runs.
• Heavy-Duty Steel Construction: Manufactured from high-tensile steel to withstand the repetitive pressures of resizing and crimping operations without warping or loosening.
• Universal 7/8"-14 Threading: Fully compatible with the industry-standard thread size used by major reloading press and die manufacturers, including RCBS, Hornady, Redding, and Lee.
• Mechanical Simplicity: A fully manual, mechanical accessory requiring no external power sources, batteries, or electrical compliance certifications for operation.

Product Specifications:

• Brand: Lyman
• Model / Retailer SKU: LY-DLR
• Manufacturer Part Number (MPN): 7631304
• Thread Specification: Standard 7/8"-14 TPI (Threads Per Inch)
• Material: Heavy-duty steel
• Locking Mechanism: Split-ring clamp with hex-head cross-bolt
• Power Requirement: None (mechanical hand tool accessory)

Who It's For:

The Lyman Split-Lock Die Locking Ring is engineered for precision handloaders, competitive target shooters, long-range hunters, and agricultural pest controllers across Australia who demand absolute consistency in their custom ammunition. It is an essential upgrade for those using single-stage, turret, or progressive reloading presses who want to replace basic, thread-damaging lock rings. Whether you are loading for tight tolerances in regional benchrest competitions or preparing reliable field rounds for Australian hunting conditions, this locking ring ensures your die settings remain locked to your exact specifications.