The Redding 06124 Case Neck Gauge Pilot Stop is a precision reloading accessory designed to guide and centre cartridge cases when measuring neck wall thickness and runout on the Redding Case Neck Gauge. It also serves as a depth stop when paired with Redding Flash Hole Deburring Tools and compatible deburring shafts. Precision CNC-machined from solid stainless steel, this mechanical pilot stop resists friction, galling, and chemical exposure from case lubricants. It features an engineered undercut relief profile designed to bypass burrs or imperfections at the case mouth and the neck-to-shoulder junction, preventing false indicator needle deflection during dial measurements.

Key Features

• Engineered Undercut Profile: Relieved design avoids internal case-mouth burrs and shoulder junctions to deliver repeatable dial indicator readings.
• Stainless Steel Construction: CNC-machined to provide wear resistance and corrosion protection during repetitive case preparation.
• Dual Tool Utility: Compatible with both the Redding Case Neck Gauge for sorting brass and flash hole deburring shafts for setting uniform cutting depths.
• Standard Mandrel Fit: Specifically bored to fit standard 3/16-inch (approximately 4.76 mm) tool mandrels.
• Mechanical Operation: Fully manual benchtop accessory requiring no external power, batteries, or electrical connections.

Specifications

• Manufacturer Part Number (MPN): 06124
• Brand: Redding Reloading Equipment
• Material: CNC-machined stainless steel
• Calibre Compatibility: 6mm / .243 calibre
• Mandrel Interface: Standard 3/16-inch (approx. 4.76 mm) shaft
• Compatible Tools: Redding Case Neck Gauge, Redding Flash Hole Deburring Tool, and standard 3/16-inch deburring shafts
• Packaged Weight: Approximately 0.034 to 0.076 lbs (15 to 35 g)

Who is the Redding Case Neck Gauge Pilot Stop for 6mm / .243 for?

• Precision handloaders building 6mm Creedmoor ammunition — Machined specifically for nominal 6mm (.243-inch) internal neck diameters on standard 3/16-inch mandrels, this reloading case neck gauge pilot ensures uniform case alignment when verifying wall thickness.
• Competitive shooters preparing .243 Winchester brass — Integrates with 3/16-inch flash hole deburring shafts to establish repeatable cutting stops and uniform internal dimensions across large batches of .243-inch brass.
• Reloaders sorting brass by neck wall uniformity for 6mm BR and 6mm ARC — Uses a dedicated 6mm neck interface with undercut clearance to prevent false dial deflection, allowing precise sorting of match brass.

Less suitable for: Handloaders working with smaller calibres like .17, .20, or .224, larger calibres such as 6.5mm, 7mm, or .30 cal, or brass requiring small-diameter 9/64-inch mandrels; these setups require dedicated sub-calibre or large-mandrel pilot stops.