The Redding 223 Rem Ackley Improved 40° Deluxe Die Set is a precision three-die reloading system engineered specifically for processing .223 Remington Ackley Improved cartridges with a 40° shoulder angle. Manufactured from heat-treated alloy steel that is CNC-machined and hand-polished, this non-powered mechanical tool set includes a full-length sizing die with decapping assembly and expander ball, a dedicated neck sizing die, and a standard bullet seating die. Operating on industry-standard 7/8"-14 threads, the set mounts into standard single-stage and turret reloading presses to seat standard .224" diameter projectiles using a Redding #10 shellholder.

Key Features:

• 3-Die Versatility: Supplies a full-length sizing die, neck sizing die, and bullet seating die to handle both virgin brass forming and fired case maintenance.
• Neck Sizing Functionality: Resizes only the case neck without working the body or shoulder, preserving fire-formed brass dimensions and extending case life for bolt-action platforms.
• Full-Length Restoration: Returns fire-formed cases to minimum SAAMI and Ackley chamber dimensions when cases chamber tightly or require cross-rifle compatibility.
• Complete Workshop Storage: Ships in a dedicated storage box that doubles as a loading block, complete with a spare decapping pin and hex wrench.

Specifications:

• Calibre: .223 Remington Ackley Improved (40° shoulder angle)
• Compatible Bullet Diameter: Standard .224"
• Die Thread Interface: 7/8"-14 thread
• Shellholder Requirement: Standard Redding #10 Shellholder (sold separately)
• Material: Heat-treated, CNC-machined alloy steel
• Set Contents: Full-Length Sizing Die, Neck Sizing Die, Bullet Seating Die, spare decapping pin, hex wrench, and storage box

Who is the Redding 223 Rem Ackley Improved 40° Deluxe Die Set for?

• Australian varmint hunters — Requires reloading .223 Remington Ackley Improved cases with a 40° shoulder angle to achieve elevated velocities and flat trajectories when targeting foxes, feral cats, and wild dogs with custom bolt-action rifles using a 7/8"-14 thread press interface.
• Benchrest and target shooters — Relies on a dedicated neck sizing die within this reloading die set to work only the neck of fire-formed brass fired at a 40° shoulder angle, preserving exact chamber fit and extending brass longevity across repeated firings.

Less suitable for: Standard factory .223 Remington chambers with a 23° shoulder or non-Ackley wildcats, which require a standard factory-calibre full-length reloading die set; nor is the neck sizing die suitable for mixed-rifle brass, which requires a full-length sizing die set to ensure reliable chambering.