What mandrel size and calibre is the Redding 06126 pilot stop designed for?

The Redding 06126 pilot stop is strictly engineered for 6.5mm (.264 calibre) cartridge cases such as 6.5 Creedmoor and 6.5 PRC. It is precisely machined to fit standard 3/16-inch (0.1875") diameter mandrels. Please note that small-diameter setups using a 9/64-inch mandrel will require Redding model #06129 instead.

Which reloading tools is this stainless steel pilot stop compatible with?

The 06126 model is designed primarily for use with Redding's Case Neck Gauge and Flash Hole Deburring Tools. Its standard 3/16-inch shaft design also allows it to function seamlessly with compatible 3/16-inch deburring shafts and mandrels from other manufacturers.

How does the undercut profile of the pilot stop assist with case preparation?

The pilot stop features a uniquely shaped undercut shoulder designed to prevent the tool from riding over or catching on burrs, chamfer marks, or imperfections at the case mouth and neck-shoulder junction. This ensures smooth, repeatable indexing for precise dial indicator measurements and consistent flash hole deburring.

Are there any electrical or regulatory compliance certifications required for this tool in Australia?

No, as an unpowered, purely mechanical reloading accessory constructed from CNC-machined stainless steel, it contains no electrical components and does not require 240V power or Australian SAA/RCM compliance certifications.

6.5mm Pilot Stop - Redding 06126

The Redding 06126 6.5mm Stainless Steel Pilot Stop is a precision reloading accessory designed to fit standard 3/16-inch (approx. 4.76 mm) diameter mandrels. Engineered specifically for 6.5mm / .264 calibre cartridge cases—such as 6.5 Creedmoor, 6.5 PRC, .260 Remington, and 6.5x55mm—this component acts as an indexing guide and depth stop. It centres the case neck during concentricity and neck wall thickness sorting on a case neck gauge, and regulates tool depth when used with a flash hole deburring tool. Featuring an undercut shoulder profile, the stop prevents riding over or binding on case mouth chamfers and neck-shoulder junctions.

Key Features

Precision Undercut Profile: Machined with a recessed relief that prevents the stop from binding against internal neck-shoulder transitions or burred case mouths.
Dual-Function Utility: Functions as a depth stop for uniform flash hole deburring and as a concentric centering guide for neck wall thickness measuring gauges.
CNC Stainless Steel Construction: Offers corrosion resistance and wear tolerance during high-volume brass preparation.
Broad 3/16-Inch Compatibility: Mounts directly onto standard 3/16-inch deburring shafts and Redding Case Neck Gauge mandrels.

Specifications

Manufacturer Part Number: 06126
Calibre Compatibility: 6.5mm / .264 calibre
Mandrel Diameter Compatibility: 3/16 inch (0.1875 in / ~4.76 mm)
Material: CNC-machined stainless steel
Nominal Weight: Approximately 0.02 lb (~9 g)
Power Requirements: None (manual reloading tool accessory)

Who is the Redding 6.5mm Stainless Steel Pilot Stop for 3/16" Mandrel for?

Precision Rifle Series competitors — requiring precise alignment for 6.5mm (.264 calibre) cartridges like 6.5 Creedmoor or 6.5 PRC on a 3/16-inch mandrel to ensure uniform neck wall thickness measurements.
Hunters handloading 6.5mm cartridges — seeking minimal runout and consistent flash hole deburring depth across 6.5mm brass using standard 3/16-inch deburring tool shafts.

Less suitable for: Handloaders running sub-calibres (such as 6mm, .22, or .17) or larger bores (.270, 7mm, or .30 calibre), which require dedicated caliber-specific pilot stops, as well as cases requiring a smaller 9/64-inch mandrel rod.

SKU	RD102746LP
Model #	06126
Brand	Redding
Shipping Weight	0.1000kg

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Redding 06126 Pilot Stop 6.5mm Stainless Steel 3/16 Mandrel

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