What reloading dies are compatible with the Redding 73187 steel neck sizing bushing?

This bushing features standard Redding external dimensions of 1/2 inch outer diameter by 3/8 inch length. It is fully interchangeable across all Redding Bushing-Style Sizing Dies, including Type S Neck Bushing Dies, Type S Full Length Sizing Dies, and Competition Bushing Neck Sizing Dies, as well as standard Wilson-style neck sizing dies.

Do I need to lubricate case necks when using this heat-treated steel bushing?

Yes, unlike Titanium Nitride coated alternatives, this heat-treated alloy steel bushing requires external case neck lubrication prior to sizing. Proper lubrication is essential to prevent brass sticking or damaging the hand-polished internal bore during the operation.

What is the maximum recommended neck reduction per pass with this bushing?

Redding recommends that sizing case necks down in increments should be no more than .004 to .005 inches per pass. If you are reducing brass from a significantly larger parent case, you must use intermediate bushing steps to avoid overworking or damaging the brass.

Are there any electrical compliance requirements or Australian certifications needed for this tool?

No electrical compliance, SAA, or RCM certifications are required. The Redding .187 Bushing is an entirely manual, non-powered mechanical reloading component designed for benchtop precision preparation of .17-calibre centerfire cartridges.

Neck Sizing Bushing - Redding 73187

The Redding .187 Heat-Treated Steel Neck Sizing Bushing (MPN 73187) is a precision reloading component engineered to size cartridge case necks down to a controlled outside diameter of 0.187 inches. Manufactured from heat-treated alloy steel, it features a hand-polished internal bore hardened to Rockwell C 60–62 to minimise sizing friction and prevent brass galling. Designed to fit all Redding Type S Bushing Sizing Dies, Type S Full Length Dies, Competition Bushing Dies, and standard Wilson-style neck dies, this bushing allows handloaders to establish exact neck tension on small-calibre brass without overworking the metal.

Key Features

Precision Diameter Control: Sizes case necks to an exact 0.187-inch diameter to achieve precise bullet grip and prevent excessive brass cold-working.
Hardened Alloy Steel Construction: Heat-treated to a surface hardness of Rockwell C 60–62 with a hand-polished internal bore for smooth case entry and extended tool longevity.
Standard Bushing Geometry: Measures 1/2 inch (0.500 inches) in outer diameter by 3/8 inch (0.375 inches) in length, ensuring universal interchangeability across Redding bushing-style die bodies.
Clear Calibre Identification: Roll-marked on the side with the .187 sizing dimension for rapid identification on the reloading bench.

Product Specifications

Brand: Redding Reloading Equipment
Model Number (MPN): 73187
Inside Diameter (Sizing Diameter): 0.187 inches
Outer Diameter: 1/2 inch (0.500 inches)
Length: 3/8 inch (0.375 inches)
Material: Heat-treated alloy steel
Surface Hardness: Rockwell C 60–62
Shipping Weight: Approximately 0.076 lb (34.5 g)
Die Compatibility: Redding Type S Neck Dies, Type S Full Length Dies, Competition Neck Sizing Dies, and Wilson-style neck sizing dies

Who is the Redding .187 Heat-Treated Steel Neck Sizing Bushing for?

.17-Calibre Centerfire Reloaders — Delivers the precise 0.187-inch inside sizing diameter required to produce optimal neck tension on small-bore cases such as .17 Remington, .17 Hornet, and .17 Fireball when using this steel neck sizing bushing.
Precision Varmint Hunters and Pest Controllers — Provides consistent cartridge dimensions and bullet release using a Rockwell C 60–62 hardened steel neck sizing bushing to maintain bench-grade accuracy on long-range pest control platforms.

Less suitable for: High-volume reloaders seeking dry operation without lubrication, as this heat-treated steel bushing requires external case neck lubricant to prevent sticking, or applications requiring neck reductions greater than .004 to .005 inches per pass, which instead require stepped intermediate bushings or Titanium Nitride (TiN) coated sizing bushings.

SKU	RD41746LP
Model #	73187
Brand	Redding
Shipping Weight	1.0000kg

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Redding 73187 Steel Neck Sizing Bushing 187 Inch

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