What dies are compatible with the Redding 73201 neck sizing bushing?

The Redding .201 bushing features standard dimensions with a 1/2-inch outer diameter and a 3/8-inch length. It is designed to freely interchange across all Redding Bushing-Style Sizing Dies, including Type S Bushing Neck Sizing Dies, Type S Full Length Sizing Dies, and Competition Neck Sizing Dies, as well as Wilson-style neck sizing dies.

How do I determine if the .201-inch size is correct for my specific cartridge setup?

Redding recommends using the formula where your bushing size equals the outside loaded neck diameter minus 0.001 to 0.002 inches to account for brass spring-back and ensure proper bullet tension. The .201-inch inside diameter is specifically built for sub-calibre applications like .17 Hornet and .17 Remington where the loaded outside neck diameter is approximately .202 to .203 inches.

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

Yes, this heat-treated steel bushing requires case neck lubrication prior to sizing to prevent brass galling or sticking inside the die. If you prefer to size your brass without the use of neck lubricants, you should look for Redding titanium nitride coated bushings instead.

Are there any electrical or regulatory safety certifications required for this product in Australia?

No electrical requirements, plugs, or safety certifications such as SAA or RCM apply to this product. The Redding 73201 is a completely passive, non-powered mechanical handloading component used on the reloading bench by Australian precision shooters.

Neck Sizing Bushing - Redding 73201

The Redding .201 Heat-Treated Steel Neck Sizing Bushing (MPN 73201) provides precise neck tension control during metallic cartridge reloading. Designed to size cartridge case necks without the need for an internal expander ball, this component minimizes brass work-hardening and fatigue to extend case life and improve concentricity. Manufactured from high-grade steel heat-treated to Rockwell C 60–62, the bushing features a hand-polished interior to reduce friction and sizing effort across repeated bench reloading operations.

Key Features:

Internal Sizing Diameter: Features a precise 0.201-inch inner diameter to establish consistent neck tension on sub-calibre brass.
Hardened Steel Construction: Heat-treated to Rockwell C 60–62 for wear resistance and dimensional stability under continuous use.
Hand-Polished Interior: Polished internal surface reduces friction and sizing resistance during the neck sizing process.
Universal Die Interface: Fully interchangeable across all Redding bushing-style sizing dies—including Type S Neck, Type S Full Length, and Competition Neck dies—as well as Wilson-style neck sizing dies.
Expander-Free Sizing: Eliminates the need for a conventional expander ball, preventing over-working of the brass and improving velocity consistency.

Specifications:

Manufacturer Part Number (MPN): 73201
Inside Diameter: 0.201 inches
Outside Diameter: 0.500 inches (1/2 inch)
Overall Length: 0.375 inches (3/8 inch)
Material: Heat-treated steel
Hardness Rating: Rockwell C 60–62 (Rc 60–62)
Die Compatibility: Redding Type S Bushing Dies, Redding Competition Sizing Dies, and Wilson-style neck dies

Who is the Redding .201 Heat-Treated Steel Neck Sizing Bushing for?

Precision Handloaders Loading Sub-Calibre Ammunition — Requires a neck sizing bushing with a precise 0.201-inch inside diameter to size brass cases (such as .17 Hornet and .17 Remington) down from loaded neck dimensions of 0.202 to 0.203 inches without over-working the case neck.
Benchrest and Varmint Shooters Demanding Consistent Muzzle Velocity — Relies on a heat-treated steel reloading neck sizing bushing hardened to Rockwell C 60–62 with a standard 0.500-inch outer diameter to maintain concentricity and eliminate expander-ball stretch across repeated firings.

Less suitable for: Handloaders who size cartridge necks without applying lubrication; heat-treated steel requires case neck lube to prevent brass galling, making titanium nitride (TiN) coated or solid carbide neck sizing bushings the better product type for lube-free neck sizing operations.

SKU	RD41756LP
Model #	73201
Brand	Redding
Shipping Weight	1.0000kg

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Redding 73201 Steel Neck Sizing Bushing .201 Inch

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