Will the Redding 75138 Body Die decap my fired 7x57mm Mauser cases while resizing the body?

No, this body die is specifically built without internal parts, decapping rods, or expander balls, meaning it does not decap or deprime cases. You will need to use a separate universal depriming die or a standard full-length sizing die if you want to remove primers during the same bench session.

What press threading and shellholder do I need to set up the Redding 75138 on my reloading bench?

The die features a standard 7/8"-14 thread that fits all standard single-stage and progressive reloading presses widely used across Australian shooting setups. For proper operation, it requires a standard Redding Shellholder #1 or a Redding Competition Shellholder Set #1.

Does this Redding body die touch or resize the case neck of my 7x57mm Mauser brass?

No, the neck area of the die is deliberately dimensioned to chamber-clearance sizes so it completely bypasses and leaves the case neck untouched. It is designed to work in conjunction with bushing neck dies like the Redding Type S series, allowing you to separate neck tension sizing from body and shoulder dimensional control.

Are there any electrical compliance or SAA/RCM certifications required for using this tool in Australia?

No electrical compliance or SAA/RCM certifications are applicable to the Redding 75138. It is a fully manual, mechanical benchtop reloading tool with no electrical components, meaning 240V mains compatibility and local electrical regulations do not apply.

7x57 Mauser Body Die - Redding 75138

The Redding 7x57 Mauser Body Die (MPN: 75138) is a dedicated reloading tool designed to full-length resize the case body and bump the shoulder back on fired 7x57mm Mauser brass without touching the case neck. Engineered with generous neck clearance and no internal decapping assembly or expander ball, this die restores correct headspace and ensures smooth bolt closure without disturbing previously set neck tension. Built with standard 7/8"-14 threads, it integrates into any standard mechanical reloading press setup.

Key Features

Dedicated Body and Shoulder Sizing: Resizes case body dimensions and sets the shoulder back to restore chamber clearance on fired brass.
Neck-Neutral Design: Contains no decapping rod, expander ball, or neck-sizing surfaces, allowing the case neck to pass through untouched.
Companion Sizing Tool: Designed specifically to work alongside Redding Type S Bushing Neck Dies or Competition Neck Dies for complete control over neck tension and case geometry.
Standard Press Fit: Features standard 7/8"-14 threading and includes a standard Redding 7/8"-14 lock ring for secure press mounting.

Specifications

Product: Redding 7x57 Mauser Body Die
Manufacturer Part Number (MPN): 75138
Calibre Compatibility: 7x57mm Mauser (7mm Mauser; .284" bullet diameter)
Die Thread Size: 7/8"-14 standard thread
Shellholder Compatibility: Redding Shellholder #1 (Part #11001) or Redding Competition Shellholder Set #1 (Part #11601)
Operation: Manual/mechanical benchtop press tool (requires external case lubrication)
Packaged Dimensions: Approximately 5.0" H x 2.25" W

Who is the Redding 7x57 Mauser Body Die for?

Precision 7x57mm Mauser Handloaders — isolates neck tension maintenance from body sizing by bumping the shoulder and sizing the body of 7x57mm Mauser brass without altering the neck diameter, providing an exact companion step to separate neck bushing dies on standard 7/8"-14 thread presses.
Shooters Managing Stiff Bolt Closure on Fired Brass — restores factory chamber clearance by resetting the shoulder position and body dimensions on expanded 7x57mm Mauser cases without running an expander ball through the case neck.

Less suitable for: Handloaders needing to decap primers or resize the case neck in a single stroke, or anyone working with live ammunition; use a standard full-length sizing die or a full-length bushing die instead.

SKU	RD41794LP
Model #	75138
Brand	Redding
Shipping Weight	1.0000kg

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Redding 75138 7x57 Mauser Body Die 7 8 14 Thread

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