What mandrel and case prep equipment sizes are compatible with the Redding 06133 Pilot Stop?

This pilot stop is strictly designed for standard 3/16-inch (0.1875-inch) mandrels and shafts, such as those used on the Redding Case Neck Gauge and Universal Flash Hole Deburring Tool. It is custom-machined specifically for .338 caliber rifle brass, meaning it will not fit sub-caliber 9/64-inch mandrel systems without changing to a caliber-specific alternative.

Does this stainless steel pilot stop require any electrical certifications or 240V power for use in the Australian workshop?

No electrical compliance, SAA approvals, RCM certifications, or 240V mains power are required because the Redding 06133 is an entirely manual, mechanical reloading accessory. Its solid CNC-machined stainless steel construction ensures it is completely unaffected by outback heat or humidity during bench-reloading sessions.

How does the undercut design of the Redding .338 Pilot Stop improve neck measurement accuracy?

The proprietary undercut contour prevents the pilot from binding or catching on minor imperfections at the case mouth or neck-shoulder junction. This ensures smooth, continuous 360-degree rotation when measuring case wall thickness and runout for precision cartridges like the .338 Lapua Magnum.

.338 Pilot Stop - Redding 06133

The Redding .338 Caliber Stainless Pilot Stop (MPN: 06133) is a precision-machined mechanical case preparation accessory engineered for .338 calibre rifle brass. Designed to fit standard 3/16″ (0.1875″) diameter mandrels and shafts, it provides concentric alignment on tools such as the Redding Case Neck Gauge and the Redding Universal Flash Hole Deburring Tool (Item #06100). Machined from solid stainless steel, it features a proprietary undercut profile that prevents the bushing from binding on burrs or imperfections at the case mouth and neck-shoulder junction, ensuring consistent deburring depth and smooth rotation for dial-indicator measurements.

Key Features

Calibre-Specific Alignment: Sized specifically for .338 calibre cartridge necks, providing positive centering during flash hole deburring and neck-wall inspection.
3/16″ Mandrel Fit: Interfaces directly with standard 3/16″ (0.1875″) diameter shafts across Redding case prep tools and compatible third-party systems.
Undercut Contour: Relieved profile eliminates binding at the case mouth and inside the neck-shoulder junction during continuous case rotation.
Stainless Steel Construction: Precision CNC-machined from solid stainless steel for long-term wear resistance and corrosion protection on the reloading bench.
Completely Manual Operation: Operates mechanically without the need for mains power, batteries, or electrical connections.

Specifications

Manufacturer Part Number (MPN): 06133
Material: CNC-machined stainless steel
Calibre Compatibility: .338 Calibre rifle cartridge cases
Mandrel/Shaft Diameter: 3/16″ (0.1875″)
Power Requirement: Manual mechanical operation

Who is the Redding 338 Cal. Pilot Stop - For 3/16 Mandrels for?

Precision rifle reloaders — Centers .338 Lapua Magnum, .338 Winchester Magnum, or .338 Norma Magnum cartridge cases over standard 3/16″ (0.1875″) flash hole deburring shafts to ensure square, uniform flash hole chamfering without off-axis cutter deflection using this reloading case prep pilot stop.
Competitive long-range shooters — Provides smooth, bind-free rotation of .338 calibre brass cases on 3/16″ gauge mandrels via an undercut pilot stop profile, allowing precise, uninterrupted dial-indicator measurements of neck wall thickness and runout.

Less suitable for: Reloaders working with case calibres other than .338 calibre or tools using non-standard rod diameters; case prep on alternate calibres (such as 6.5mm, 7mm, or .30 cal) or sub-calibre small-flash-hole cases requires a dedicated caliber-specific pilot stop or a smaller 9/64″ mandrel pilot system.

SKU	RD41423LP
Model #	06133
Brand	Redding
Shipping Weight	1.0000kg

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Redding 06133 Pilot Stop 338 Caliber Stainless 3/16 Mandrels

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