The Redding Micro-Adjustable Taper Crimp Die for .223 Remington (MPN 31111) applies a uniform taper crimp to .223 Remington and 5.56×45mm NATO rifle cartridges. Engineered from precision-machined, hardened steel, it secures projectiles against bullet setback and displacement caused by cycling and recoil without damaging non-cannelured bullet jackets. The die features an integrated top-mounted micrometer mechanism that allows reloaders to make precise adjustments directly from the top of the press without loosening the lock ring or altering the main die body position.

Key Features:

• Top-Mounted Micrometer Adjustment: Features a knurled micrometer barrel delivering approximately ±0.100" of on-the-fly crimp adjustment marked in precise 0.001" increments.
• Non-Deforming Crimp Profile: Applies an angled taper crimp to maintain consistent bullet tension across mixed-wall-thickness brass cases without buckling the shoulder or deforming smooth projectiles.
• Dedicated Rifle Sleeve: Utilises a hardened, non-reversible internal crimping sleeve specifically matched to .223 Remington / 5.56×45mm NATO case neck dimensions.
• Standard Press Integration: Built with industry-standard 7/8"-14 TPI threads, ensuring compatibility across major single-stage, turret, and progressive reloading presses.

Specifications:

• Calibre Compatibility: .223 Remington / 5.56×45mm NATO
• Press Threading: 7/8"-14 TPI
• Adjustment Range: ±0.100"
• Adjustment Increments: 0.001"
• Construction: Precision-machined, hardened steel
• Operation: Manual mechanical reloading tool

Who is the Redding 223 Rem Micro Adjustable Taper Crimp Die for?

• High-volume handloaders loading .223 Remington for semi-automatic or rapid-firing rifles — prevents projectile setback under heavy cycling by applying a dedicated taper crimp to .223 Remington / 5.56×45mm NATO cases, adjustable across a ±0.100" working range.
• Reloaders utilising progressive and turret presses with tight toolhead space — allows precise crimp depth changes in 0.001" increments via the top-mounted micrometer dial on this micro-adjustable taper crimp die without requiring toolhead disassembly or loosening standard 7/8"-14 TPI lock rings.

Less suitable for: Precision bolt-action rifle applications where case neck tension alone maintains bullet retention, cartridges requiring a heavy roll crimp into a deep cannelure groove (which require a dedicated roll crimp die), or alternative calibres such as .308 Winchester and 6.5 Creedmoor that require their own dedicated rifle crimp dies.