Hornady Trimmer Pilot #17 .410

• Caliber-Specific Fit: The #17 pilot is sized for .410 / 10.41 mm case mouths, helping guide the cutter concentrically so trimmed brass stays uniform and ready for consistent reloading work.
• Cam Lock Trimmer Compatibility: This pilot is made for the Hornady Cam Lock™ Trimmer, giving reloaders a straightforward way to match the trimmer to the cartridge they are preparing.
• Steel Construction: The steel body stands up to repeated contact with brass during case preparation, which matters when trimming batches of cases over time.
• Supports Consistent Case Prep: By centering the case mouth during trimming, the pilot helps maintain repeatable case length and cleaner case-mouth work before chamfering, deburring, and loading.
• Compact, Purpose-Built Accessory: As a dedicated case preparation component, it adds the exact caliber support needed without changing the rest of the trimmer setup.

About the Case Trimmer Pilots Series

Hornady Case Trimmer Pilots are small but important parts within the company’s reloading tool lineup. They are designed for reloaders who want their case trimming setup matched to specific bullet diameters, so the cutter is guided correctly as brass is brought back to uniform length. In Hornady’s range of case-care equipment, these pilots serve as caliber-specific accessories for the Cam Lock™ Trimmer, letting the same trimmer body work across many different cartridges simply by changing the pilot.

The series follows a practical design philosophy: each pilot is dedicated to a particular caliber, built for repeatable alignment, and easy to interchange when moving between reloading projects. That makes the system well suited to shooters who load for multiple chamberings and want a tidy, modular bench setup rather than separate trimming tools for every cartridge. In use, the benefit is straightforward: a properly matched pilot helps the case mouth stay centered during trimming, which supports more even case lengths, cleaner finishing work, and a smoother overall case-preparation process.

About the Hornady Trimmer Pilot #17 .410

The Hornady Trimmer Pilot #17 .410 is a dedicated pilot for reloaders working with .410 / 10.41 mm case mouths during case preparation. Its role is simple but important: it supports the case mouth inside the trimmer so the cutter tracks in line with the brass instead of working off-center. In practical terms, that helps produce more uniform trimmed cases, which is useful when consistent neck tension, seating feel, and overall brass preparation matter.

This model is part of Hornady’s interchangeable pilot system for the Cam Lock™ Trimmer. That matters on the bench because it allows one trimmer platform to be adapted to the cartridge being processed, rather than forcing compromise with a one-size-fits-all arrangement. For reloaders who move between calibers, the pilot system keeps setup specific and repeatable while remaining compact and easy to store.

The pilot is made from steel, a sensible choice for a wear component that repeatedly contacts brass during trimming sessions. Its compact form also makes it easy to swap in and out as part of a broader case-prep routine. For anyone loading .410-based brass and wanting the trimmer to guide the case mouth correctly, the #17 pilot is the caliber-matched part that makes the trimming setup complete.

About Hornady

Hornady Manufacturing was founded by Joyce Hornady in 1949 in Grand Island, Nebraska. The company remains family-owned and is known for producing bullets, ammunition, reloading tools, and related accessories. Within the reloading category, Hornady has built a strong presence with equipment such as presses, dies, powder measures, scales, and case-preparation tools, giving handloaders a broad system rather than isolated products.

Hornady expanded its tooling capabilities when it acquired Pacific Tool Company in 1971, strengthening its position in reloading equipment. The brand is also closely associated with practical design solutions such as the Lock-N-Load bushing system, which simplifies die changes on the loading bench. That focus on efficient, repeatable workflow is directly relevant to accessories like trimmer pilots, where precise fit and straightforward interchangeability are more important than unnecessary complexity.

Main Features

• Manufacturer: Hornady
• Product Type: Case Trimmer Pilot
• Model: #17
• Compatible System: Hornady Cam Lock™ Trimmer
• Caliber: .410
• Bullet Diameter (mm): 10.41 mm
• Bullet Diameter (inch): 410.00 inch
• Material: Steel
• Intended Use: Case preparation
• Made in: USA

Warranty

2 years. Hornady states a 2-year warranty for this product, covering the period specified for the item.