What reloading press thread size and shellholder does the Redding 83544 require?

The Redding 83544 features an industry-standard 7/8"-14 thread interface, making it compatible with most standard single-stage and turret reloading presses used in Australian workshops. It requires a Redding Shellholder #6 (Part #11006) or a Redding Competition Shellholder #6 (Part #11606), which are sold separately.

How do I properly use the Redding 83544 for file-trimming 7mm STW brass?

Screw the die into your reloading press until it slightly touches the shellholder, then raise a lubricated parent case into the die. The hardened top surface of the die acts as a flat cutting stop, allowing you to use an ordinary flat mill file to trim excess brass flush without overworking the case via unnecessary full-length resizing.

Is the Redding 83544 suitable for high-volume commercial brass processing?

This die is specifically engineered for low-to-moderate batch case prep and custom brass forming on single-stage presses. For high-volume automated case preparation involving hundreds or thousands of rounds, power case trimmers are recommended over manual die file-trimming.

Are there any electrical or regulatory compliance requirements for the Redding 83544 in Australia?

No. The Redding 83544 is a 100% mechanical, manually operated workshop tool with no electrical components. Therefore, 240V mains compatibility, Australian electrical plugs, and SAA/RCM regulatory marks are not applicable.

7mm STW Trim Die - Redding 83544

The Redding 7mm STW Form and Trim Die (MPN: 83544) is a dedicated reloading tool engineered to shape and file-trim brass cartridge cases to the correct length for the 7mm Shooting Times Western (STW) cartridge. Constructed from heat-treated, surface-hardened precision steel, the die features a hardened top surface designed to withstand contact with standard flat mill files. It allows reloaders to execute intermediate case-forming steps from parent magnum brass and file excess neck material flush without subjecting the case body to unnecessary full-length resizing stresses.

Key Features

Hardened Top Surface: Functions as a precise mechanical file stop, allowing extended cartridge brass to be manually filed flush to exact trim length.
Intermediate Case Forming: Facilitates necking down and rough-forming parent magnum cases into 7mm STW dimensions prior to final full-length sizing.
Reduced Brass Stress: Internal dimensions enable case-length trimming without imparting unnecessary full-length sizing pressure on the cartridge walls.
Universal Press Threading: Machined with an industry-standard 7/8"-14 thread interface to ensure direct compatibility with standard single-stage and turret reloading presses.

Product Specifications

Manufacturer Part Number (MPN): 83544
Calibre Compatibility: 7mm STW (Shooting Times Western / .284 in bullet diameter)
Thread Interface: 7/8"-14 TPI
Shellholder Compatibility: Redding Shellholder #6 (Part #11006) or Redding Competition Shellholder #6 (Part #11606)
Material: Surface-hardened, heat-treated steel
Power Requirements: None (100% mechanical manual operation)

Who is the Redding 7mm STW Form and Trim Die for?

Precision Handloaders Forming Custom Brass — requires a dedicated forming tool to neck down and file-trim parent magnum brass to exact 7mm STW chamber dimensions on a standard 7/8"-14 threaded press.
Low-to-Moderate Batch Reloaders — handles manual case prep and trimming on single-stage presses utilizing Redding #6 shellholders without requiring motorized case prep centres.

Less suitable for: High-volume brass preparation exceeding hundreds to thousands of rounds, where a dedicated motor-driven power case trimmer provides significantly faster output than a manual file-trim die, or for cartridges with dimensions other than 7mm STW.

SKU	RD102254LP
Model #	83544
Brand	Redding
Shipping Weight	0.2000kg

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Redding 83544 7mm Stw Form And Trim Die 7/8-14 Thread

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