What die systems are compatible with the Redding 73203 steel neck sizing bushing?

The Redding 73203 bushing features standard dimensions of 0.500 inches in outer diameter and 0.375 inches in length. It is designed to freely interchange across all Redding Type S Bushing Style Dies, Redding Competition Bushing Neck Sizing Dies, and standard L.E. Wilson-style bushing dies.

Do I need to apply case-neck lubrication when using this heat-treated steel bushing?

Yes, standard heat-treated steel bushings like the Model 73203 require external case-neck lubrication prior to sizing to ensure smooth operation and prevent brass scuffing. If you prefer dry sizing with minimal lubrication, you might want to consider Redding's Titanium Nitride coated series instead.

What is the correct procedure if my fired brass requires more than a 0.004" neck reduction?

To prevent case neck buckling or shoulder distortion when a neck reduction exceeds 0.004" to 0.005", Redding recommends stepping down in two separate bushing sizes rather than attempting the reduction in a single press stroke.

Does this non-powered reloading component require any electrical safety certifications for use in Australia?

No electrical compliance or SAA/RCM certification is required for the Redding 73203. As a purely passive, non-powered metallic mechanical reloading component, it does not connect to mains power or require 240V compatibility.

Neck Sizing Bushing - Redding 73203

The Redding .203 Heat-Treated Steel Neck Sizing Bushing (MPN: 73203) provides precise neck tension control by sizing the outside neck diameter of cartridge brass to exact dimensions. Precision-machined from high-grade steel and heat-treated to a hardness of approximately Rockwell C 60–62, this bushing features hand-polished internal surfaces to minimise friction and prevent over-working case brass. It incorporates a precision-engineered lead-in chamfer to ensure smooth case centering during the press stroke, eliminating the need for standard internal expander balls and reducing neck runout.

Key Features

Precise Neck Tension: Accurately sizes case necks to an inside diameter of 0.203 inches (5.156 mm) to optimise bullet grip and extend brass life.
Heat-Treated Durability: Hardened to Rockwell C 60–62 with polished sizing surfaces for wear resistance during repetitive reloading cycles.
Smooth Case Entry: Machined with a radiused lead-in chamfer to guide the case neck smoothly into the sizing surface.
Universal Die Interface: Fully interchangeable across all Redding Type S Full Length and Neck Sizing Dies, Redding Competition Bushing Dies, and standard L.E. Wilson–style bushing dies.

Product Specifications

Inside Diameter (Sizing Diameter): 0.203 inches (5.156 mm)
Outside Diameter: 0.500 inches (1/2 inch)
Length: 0.375 inches (3/8 inch)
Material: Heat-treated steel
Surface Hardness: Rockwell C 60–62 (Rc 60–62)
Operating Requirements: Requires external case neck lubrication; manual mechanical operation

Who is the Redding .203 Heat-Treated Steel Neck Sizing Bushing for?

Precision benchrest shooters reloading small-calibre cartridges — relies on the 0.203-inch inside diameter of this neck sizing bushing to set exact neck tension on small-calibre wildcats and .17 calibre variants with loaded neck diameters measuring between 0.204 and 0.206 inches.
Long-range competitors handloading with Redding Type S bushing dies — utilises the standard 0.500-inch outer diameter and 0.375-inch length to interchange seamlessly with Type S and Competition bushing dies while maintaining hardness at Rockwell C 60–62 to eliminate expander-ball brass drag.

Less suitable for: Handloaders requiring total neck reductions exceeding 0.004 to 0.005 inches from fired brass dimensions in a single stroke, who require an intermediate step-down bushing size or a custom progressive sizing die setup to prevent case neck buckling.

SKU	RD41758LP
Model #	73203
Brand	Redding
Shipping Weight	1.0000kg

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Redding 73203 Steel Neck Sizing Bushing 0.203 Id

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