What specific cartridge families and case head tolerances are supported by the RCBS Shell Holder #38?

The RCBS #38 shell holder is engineered with a headspace tolerance to capture exactly 0.125 inches (3.175 mm) of the case head. It is strictly compatible with the Remington Ultra Magnum and Short Action Ultra Magnum families, the Nosler family including the 26, 27, 28, and 33 Nosler, as well as the .300 PRC and .455 Webley.

Is this hardened steel reloading component subject to any Australian electrical or regulatory compliance certifications?

No. Because the RCBS Shell Holder #38 is a completely mechanical tool constructed of hardened steel, it requires no electrical power. It is free from SAA or RCM electrical certification requirements and can be used on any Australian reloading bench without electrical restrictions.

Can I use the RCBS #38 shell holder with progressive reloading presses or specialised seating dies?

This model is designed for standard single-stage and turret presses and is incompatible with progressive presses that require multi-position shell plates. Furthermore, if you are using specialised reloading dies like the RCBS Competition Seating Die, you will need to use the RCBS Competition Extended Shellholder #38 instead to ensure proper working clearance.

Shell Holder #38 - RCBS R99238

The RCBS Single Stage Shell Holder #38 (Part Number 99238) is a precision-machined reloading accessory engineered to secure high-capacity cartridge cases during the metallic reloading process. Manufactured from hardened steel, this shell holder is designed to withstand the high pressures of resizing and expanding operations on standard single-stage and turret press rams. It ensures repeatable precision by holding cartridge cases to strict industry tolerances, eliminating headspace issues on compatible calibres.

Key Features

Hardened Steel Construction: Fabricated from heat-treated steel to resist wear, deformation, and mechanical fatigue under standard workshop press loads.
Precise Headspace Tolerance: Engineered to capture exactly 0.125 inches (3.175 mm) of the cartridge case head, ensuring consistent alignment and adherence to SAAMI specifications.
Universal Shank Design: Fits standard single-stage press rams, turret presses, and compatible hand or automatic priming tools.
Optimised Rim Fit: Specially contoured to grip large-capacity magnum rims securely, preventing cases from slipping or tearing during high-force sizing strokes.

Product Specifications

Model/Part Number: 99238 (also designated as R99238)
Material: Hardened steel
Case Head Capture Dimension: 0.125 inches (3.175 mm)
Press Compatibility: Standard single-stage and turret presses with universal rams
Cartridge Compatibility: 7mm RUM, .300 RUM, .338 RUM, .375 RUM, 7mm RSAUM, .300 RSAUM, 26 Nosler, 27 Nosler, 28 Nosler, 33 Nosler, .300 PRC, and .455 Webley

Who is the Rcbs Shell Holder # 38 Rem Ultra Cals for?

Remington Ultra Magnum and RSAUM Handloaders — requires this specific tool to securely grip the specialized rim geometry of RUM and RSAUM cartridge families, ensuring the critical 0.125-inch (3.175 mm) case head capture depth is maintained for precise headspace alignment during resizing.
Nosler and .300 PRC Precision Reloaders — provides the exact mechanical clearance and cartridge-specific alignment required to process 26 Nosler, 28 Nosler, and .300 PRC cases through standard reloading dies without the risk of case slipping or rim shearing.

Less suitable for: High-volume reloaders operating progressive reloading presses, which require multi-position shell plates instead of single-stage shell holders. It is also incompatible with standard-diameter cartridges such as the .308 Winchester or .30-06 Springfield, which require a narrower slot opening to prevent loose-fit alignment errors. Furthermore, this standard-height shell holder is not suitable for setups utilizing specialized dies like the RCBS Competition Seating Die, which require a dedicated extended shell holder to shorten the tooling working distance.

SKU	RC39305LP
Model #	R99238
Brand	Rcbs
Shipping Weight	1.0000kg

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Rcbs R99238 Shell Holder #38 Hardened Steel Rum Calibres

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