How do I determine if the 0.285-inch diameter is the correct size for my cartridge cases?

To determine proper bullet retention, measure the outside neck diameter of a loaded round with your cartridge and subtract 0.001 to 0.002 inches (or 0.002 to 0.003 inches for hunting applications). If your calculated target diameter falls outside 0.285 inches, you will need to step up or down in Redding's 0.001-inch increment series, which ranges from 0.185 to 0.368 inches.

Do I need to use case neck lubrication with this heat-treated steel bushing?

Yes, Redding explicitly specifies that cases resized with standard heat-treated steel bushings require case neck lubrication to prevent brass galling or sticking during the sizing stroke. If you prefer a lubrication-free sizing process, Redding recommends stepping up to their Titanium Nitride coated variant model 76285.

Does this reloading component require any electrical safety compliance certifications for use in Australia?

No electrical compliance or SAA/RCM certifications are required for the Redding 73285. This is a purely passive, non-powered mechanical handloading accessory that operates entirely through your manual reloading press without drawing mains power.

Neck Sizing Bushing - Redding 73285

Q: What dies are compatible with the Redding 73285 Steel Neck Sizing Bushing?

The Redding 73285 bushing features a standard 1/2-inch outer diameter and 3/8-inch length, allowing it to freely interchange in all Redding Bushing-Style Sizing Dies including Type S Neck Sizing Dies, Type S Full Length Dies, and Competition Neck Sizing Dies. It is also fully compatible with L.E. Wilson-style bushing dies used in standard reloading presses.

The Redding .285 Heat-Treated Steel Neck Sizing Bushing (MPN: 73285) is a precision handloading component engineered to size cartridge case necks to an exact dimension without over-working the brass or requiring an expander ball. Built to freely interchange in all Redding Bushing-Style Sizing Dies—including Type S Neck Sizing Dies, Type S Full Length Dies, and Competition Neck Sizing Dies—as well as compatible L.E. Wilson-style bushing dies, this tool allows reloaders to maintain precise control over neck tension. Sizing only as much brass as necessary prevents premature work-hardening and fatigue at the case neck, extending overall cartridge brass life.

Key Features

Precise Neck Sizing: Delivers an exact 0.285-inch internal sizing diameter to establish consistent bullet retention across reloading batches.
Hardened Steel Construction: Manufactured from high-grade steel heat-treated to a surface hardness of Rockwell C 60–62 (Rc 60–62) for wear resistance during repetitive sizing strokes.
Hand-Polished Interior: Features a hand-polished internal sizing surface to reduce friction and drag across lubricated case necks.
Standard Die Compatibility: Machined with a standard 1/2-inch outer diameter (approx. 12.7 mm) and 3/8-inch length (approx. 9.5 mm) for drop-in interchangeability across standard bushing dies.

Product Specifications

Internal Sizing Diameter: 0.285 inches
Outer Diameter: 1/2 inch (approx. 12.7 mm)
Length: 3/8 inch (approx. 9.5 mm)
Material & Hardness: High-grade steel, heat-treated to Rockwell C 60–62
Finish: Hand-polished internal sizing surface
Die Compatibility: Redding Type S Neck, Type S Full Length, and Competition Neck Sizing Dies, plus L.E. Wilson bushing dies
Lubrication Requirement: Case neck lubrication required for standard heat-treated steel sizing
Nominal Weight: Approximately 10–15 grams

Who is the Redding .285 Heat-Treated Steel Neck Sizing Bushing for?

Precision Handloaders Tuning Competition Ammunition — Requires precise bullet grip control on match cases without over-working the brass, relying on this steel reloading neck sizing bushing's 0.285-inch internal diameter and Rockwell C 60–62 surface hardness to maintain uniform neck tension across high-volume target and benchrest cycles.
Long-Range Hunters Reloading Specific Calibres — Requires consistent neck tension on 6.5mm or select thin-walled 7mm cartridges, utilising this steel reloading neck sizing bushing to fit standard 1/2-inch outer diameter die cavities and accurately size brass measuring 0.285 inches after subtracting the required .002-inch to .003-inch clearance for field bullet retention.

Less suitable for: Handloaders whose loaded cartridge neck dimensions measure outside the 0.285-inch threshold after calculating bullet retention; these setups require an alternate bushing stepped up or down within the 0.001-inch increment range between .185 and .368 inches, or a Titanium Nitride (TiN) coated bushing if lubrication-free sizing is required.

SKU	RD41768LP
Model #	73285
Brand	Redding
Shipping Weight	1.0000kg

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Redding 73285 Steel Neck Sizing Bushing .285 Inch

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