What reloading press thread size and shellholder do I need to use the Redding 83172R 9mm Luger Trim Die?

The Redding 83172R features a standard 7/8"-14 TPI thread interface, making it fully compatible with almost all single-stage and turret reloading presses on the Australian market. For proper operation, it requires a Redding #13 shellholder, though an extended shellholder may occasionally be needed depending on your specific press ram stroke.

How does this file-trim die trim brass without over-resizing the case?

Unlike full-length sizing dies that squeeze the entire brass body, Redding trim dies are precision-engineered to exact SAAMI chamber dimensions and hardened steel specifications. This allows you to guide the case up into the die and file off excess brass flush with the top surface without altering or over-working the case body, significantly extending your brass life.

Is this die suitable for high-volume batch processing of thousands of 9mm brass cases?

The Redding 83172R is designed for manual, single-case hand-file operation, making it ideal for precision match reloaders rather than commercial-scale volume. If you are batch-processing thousands of handgun cases, a rotary lathe-style power trimmer or automatic motorized system is recommended to reduce labour intensity.

Do I need any special firearms licences or electrical compliance certificates to purchase this tool in Australia?

No special firearms licence registration is required to purchase or own the Redding 83172R trim die, as it is classified as standard non-firearm reloading tooling. Furthermore, because it is a purely mechanical hand tool requiring zero electrical power, electrical compliance certifications such as an SAA or RCM plug are not applicable.

How should I maintain the hardened steel top surface of the die after extensive hand-filing?

After extended use in your reloading room, wipe away any brass shavings and apply a light coat of gun oil or rust preventative to the heat-treated steel surfaces. Storing the die in a dry environment will prevent oxidation and ensure the precision filing surface remains undamaged for years of accurate reloading.

9mm Trim Die - Redding 83172R

The Redding 9mm Luger Trim Die (Manufacturer Part Number: 83172 / 83172R) is a mechanical reloading tool engineered to trim 9mm Luger (9x19mm Parabellum / 0.355" bullet diameter) cartridge cases to exact SAAMI length specifications directly inside a standard press. Constructed from heat-treated, hardened alloy steel, the die allows users to file off excess case mouth material with a flat hand file without cutting into or damaging the die face. It securely holds the brass to shape during the trimming process without unnecessary full-length resizing, preserving the service life of the cartridge brass while maintaining consistent headspace alignment and uniform taper crimping.

Key Features

Hardened Steel File-Trim Surface: Features an ultra-hard top surface designed to withstand direct contact from flat hand files during manual trimming.
Minimal Resizing Profile: Holds 9mm Luger cases true to standard dimensions without over-working the brass via unnecessary resizing steps.
Standard Press Interface: Machined with industry-standard 7/8"-14 TPI threads to mount directly into standard single-stage and turret reloading presses.
Case Forming and Headspace Uniformity: Establishes repeatable cartridge lengths to ensure precise taper-crimping and headspace indexing on the case mouth.
Non-Powered Operation: Operates entirely mechanically without electrical connections or power sources.

Specifications

Calibre: 9mm Luger / 9x19mm Parabellum (0.355" bullet diameter)
Thread Standard: 7/8"-14 TPI
Material: Heat-treated, hardened alloy steel
Shellholder Compatibility: Redding #13 shellholder (Part #11013) / extended shellholder depending on press stroke
Manufacturer Part Number: 83172 / 83172R
Operation Mode: Manual single-case file trim

Who is the Redding 9mm Luger Trim Die for?

Match and competition pistol reloaders — requires precise 9mm Luger (0.355" bullet diameter) case length uniformity to achieve consistent taper-crimping and accurate headspace alignment in standard 7/8"-14 TPI press setups using this 9mm Luger case trim die.

Less suitable for: High-volume reloaders processing batches of thousands of handgun cases, who exceed the practical throughput of manual single-case file trimming and require a rotary lathe-style power trimmer or motorized automatic trimming system; or reloaders seeking to trim larger straight-wall calibres such as .38 Special and .45 ACP, which require dedicated calibre-specific trim dies.

SKU	RD102413LP
Model #	83172R
Brand	Redding
Shipping Weight	0.2000kg

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Redding 83172r 9mm Luger Trim Die 7/8-14 Tpi

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