The Lyman Case Trimmer Pilot #27 (SKU: LY-CTP27, MPN: 7821989) is a precision-machined steel reloading accessory designed to ensure accuracy and consistency during the brass trimming process. Engineered specifically for .27 caliber cartridge cases, this pilot guides the cutter of your Lyman case trimmer squarely into the case mouth. By sliding smoothly into the inside of the case neck, it prevents the brass from collapsing, deforming, or distorting under the pressure of the cutter. This mechanical component is essential for maintaining uniform neck tension and exact case lengths, which are critical factors in handloading high-quality ammunition.

Key Features:

• Deformation Prevention: Supports the internal neck wall of the cartridge case, preventing distortion or collapsing while the cutter face is engaged.
• Precise Alignment: Ensures the case mouth is cut perfectly square to the axis of the cartridge, promoting uniform neck tension and consistent release of the projectile.
• Universal Compatibility: Designed to fit all standard Lyman case trimming systems, including the Lyman Universal Case Trimmer and the Lyman AccuTrimmer.
• Durable Construction: Precision-ground from hardened steel to resist wear and maintain exact tolerances over thousands of reloading cycles.
• Mechanical Simplicity: This is a non-powered, purely mechanical tool that requires no external power source or calibration adjustments.

Technical Specifications:

• Manufacturer Part Number (MPN): 7821989
• Product SKU: LY-CTP27
• Compatible Bullet Diameter: .277 inches (.27 Caliber)
• Compatible Rifle Calibers: 6.8mm Remington SPC, .270 Winchester, and .270 Winchester Short Magnum (.270 WSM)
• Weight: Approximately 0.0125 lbs (5.6 grams / 0.2 oz)
• Electrical Requirements: None. As a solid metal mechanical component, this item is exempt from Australian 240V electrical safety regulations, SAA approvals, and RCM (Regulatory Compliance Mark) requirements.

Who It Is For:

The Lyman Case Trimmer Pilot #27 is specifically designed for Australian target shooters, precision benchrest competitors, and hunters who reload .277" caliber ammunition. When brass cartridge cases are fired, the high pressures cause the metal to flow forward, stretching the case neck. To prevent dangerous over-pressure situations and ensure smooth chambering in bolt-action or semi-automatic rifles, these cases must be trimmed back to SAAMI specification lengths. This pilot is an indispensable tool for reloaders processing popular Australian hunting calibers like the classic .270 Winchester and the high-velocity .270 WSM, allowing them to achieve the precise, repeatable case preparation required for tight groupings and reliable field performance.