Which RCBS case trimmers are compatible with the R9391 .37 Caliber Pilot?

The RCBS R9391 pilot features a 0.152" shank diameter and is built exclusively for RCBS metallic reloading case trimmers. It is directly compatible with the RCBS Trim Pro series, including the Trim Pro and Trim Pro-2, as well as legacy RCBS Rotary Case Trimmers and Rotary Case Trimmer-2.

Will this RCBS pilot fit into my Lyman, Forster, or Redding case trimmer?

No, this pilot is not compatible with other brands due to differing shank standards. Lyman trimmers require a smaller 0.135" shank, while Forster, Redding, and Hornady trimmers require a larger 0.1875" pilot shank, meaning the 0.152" RCBS shank will not interchange without modification.

Does this unpowered reloading accessory require any Australian electrical certifications for use in the outback?

As a solid-steel, unpowered mechanical tool accessory weighing just 1 oz, the RCBS R9391 contains no electrical components and operates entirely manually. Therefore, it does not require 240V mains power, an Australian AU plug, or SAA/RCM regulatory compliance certification for use on your reloading bench.

How does the tapered nose design of the R9391 pilot improve case trimming precision?

The pilot head features a distinct taper that guides the 0.152" shaft smoothly into the case mouth of .375-caliber brass like the .375 H&H Magnum or .375 Ruger without catching. Once inserted into the inner neck, it eliminates wobble and forces the cartridge to align perfectly straight with the trimmer's cutting blade for a uniform cut.

Case Trimmer Pilot - RCBS R9391

The RCBS Case Trimmer Pilot .37 Caliber (Model R9391) is a precision metallic cartridge reloading accessory manufactured from case-hardened steel. Engineered exclusively for RCBS metallic reloading case trimmers, this pilot guides brass cartridge cases during the trimming stage to guarantee a square and uniform case mouth cut. By establishing concentric alignment, it prevents off-center movement and ensures that the casing aligns perfectly straight with the trimmer’s cutter blade. This unpowered mechanical tool accessory integrates seamlessly into Australian reloading setups without requiring mains power, adapter plugs, or electrical certifications.

Key Features

Tapered Nose Design: The pilot head is designed with a distinct taper, allowing the shaft to slide smoothly into the case mouth without catching.
Concentric Alignment: Once inserted, the pilot eliminates wobble and forces the brass casing into perfect alignment with the cutting tool.
Solid Steel Construction: Made from case-hardened steel to withstand manual hand-cranking forces and standard reloading bench environments.
Broad RCBS Compatibility: Built for direct integration with the RCBS Trim Pro series (including Trim Pro and Trim Pro-2) as well as legacy RCBS Rotary Case Trimmers.

Product Specifications

Model Number: R9391
Caliber Compatibility: .37 / .375 caliber
Shank (Shaft) Diameter: 0.152" (nominally detailed up to .154" maximum)
Material: Case-hardened steel
Product Weight: 1 oz (approximately 28.3 grams)
Packaging Dimensions: 2.95" L x 2.0" W x 0.60" H

Who is the RCBS Case Trimmer Pilot .37 Caliber for?

Reloaders of .375-caliber cartridges — requires a dedicated tool to guide and center cases with a .37 / .375 caliber inner neck diameter, such as .375 H&H Magnum, .375 Ruger, or .375 Winchester, ensuring uniform case lengths during the trimming process.
Users of RCBS Trim Pro and Rotary Case Trimmers — utilizes a standard 0.152" shank diameter to fit securely into existing RCBS trimming units, ensuring precise concentric case alignment while weighing just 1 oz to keep tool assemblies lightweight.

Less suitable for: reloaders using alternative brand trimmers, as this unit's 0.152" shank will not fit trimmer spindles requiring smaller 0.135" or larger 0.1875" pilots, and those processing ultra-high-volume batches of hundreds or thousands of cases per session, who are better served by motorized, dedicated three-way cutter heads or automated case prep centers.

SKU	RC39293LP
Model #	R9391
Brand	Rcbs
Shipping Weight	1.0000kg

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Rcbs R9391 Case Trimmer Pilot 37 Caliber Hardened Steel

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