What reloading dies are compatible with the Redding 73309 steel neck sizing bushing?

The Redding 73309 bushing is designed to fit all Redding Bushing-Style Neck Sizing Dies and Full Length Sizing Dies, including Type S Neck Sizing and Type S Full Bushing dies. It also fits compatible Wilson-style and other manufacturer standard 1/2-inch outer diameter bushing dies with its 0.500-inch O.D. and 0.375-inch height dimensions.

Does this standard heat-treated steel bushing require case neck lubrication during operation?

Yes, standard heat-treated carbon steel bushings like the Redding 73309 require cartridge case neck lubrication prior to sizing to prevent brass galling and cases sticking inside the die. If you prefer dry sizing without neck lube, you would typically look toward a Titanium Nitride coated variant instead.

How does case neck wall variation affect the performance of the 0.309-inch bushing?

Redding recommends that your brass have uniform neck wall thickness when using this bushing. If your case neck wall thickness varies by more than 0.002 inches, you should not rely solely on the neck bushing, and instead use a bushing 0.002 to 0.003 inches smaller with an expander ball to ensure consistent inside neck tension.

Are there any Australian electrical safety certifications or permits required to purchase this bushing in Australia?

No electrical compliance, SAA/RCM certification, or 240V mains power is required because this is a purely mechanical, unpowered handloading component. It is freely imported and sold across Australian shooting sports and reloading retailers without needing a firearms license endorsement, though standard state transport and storage rules for reloading accessories still apply.

Neck Sizing Bushing - Redding 73309

The Redding .309 Heat-Treated Steel Neck Sizing Bushing (MPN 73309) is a precision reloading die insert designed to resize cartridge case necks to an exact outer diameter without the use of an expander ball. Machined to a 0.309-inch inner diameter, this bushing allows handloaders to precisely regulate neck tension and extend brass working life. It fits all Redding Type S Bushing Style Neck Sizing and Full Length Sizing Dies, as well as standard 1/2-inch outer diameter bushing-compatible dies.

Key Features

Internal Sizing Diameter: Features a precisely machined 0.309-inch inner diameter to control bullet grip and neck tension in 0.001-inch increments.
Hardened Steel Construction: Heat-treated carbon steel rated at Rockwell C 60–62 (Rc 60–62) for long-term wear resistance during repeated sizing cycles.
Hand-Polished Interior: Hand-polished internal surface reduces friction and brass galling during the resizing stroke when used with case neck lubricant.
Standard Fit: Standardized external dimensions of 0.500 inches (1/2-inch) outer diameter by 0.375 inches (3/8-inch) height ensure drop-in compatibility across Type S and standard bushing dies.

Specifications

Product Type: Steel neck sizing bushing
Manufacturer Part Number (MPN): 73309
Inner Sizing Diameter: 0.309 inches
Outer Diameter: 0.500 inches (1/2 inch)
Height / Length: 0.375 inches (3/8 inch)
Material: Heat-treated carbon steel
Hardness Rating: Rockwell C 60–62 (Rc 60–62)
Die Compatibility: Redding Type S Neck Sizing Dies, Type S Full Length Dies, and standard 1/2-inch Wilson-style bushing dies

Who is the Redding .309 Heat-Treated Steel Neck Sizing Bushing for?

Precision rifle handloaders tuning ammunition concentricity — sizes cartridge case necks to an exact 0.309 inches inside diameter without using an expander ball, reducing neck runout and brass overworking in precision rifle brass.
Reloaders utilizing Redding Type S bushing dies — fits standard 0.500-inch outer diameter and 0.375-inch height die cavities, providing a surface hardness of Rockwell C 60–62 for consistent mechanical neck sizing under standard case lubrication.

Less suitable for: Cartridge brass with case neck wall thickness varying by more than 0.002 inches, where a bushing used in conjunction with an expander ball or a standard non-bushing sizing die with an expander button is required to maintain a uniform internal neck diameter.

SKU	RD41774LP
Model #	73309
Brand	Redding
Shipping Weight	1.0000kg

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Redding 73309 Steel Neck Sizing Bushing 309 Inch

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