Hornady Lock-N-Load Case Prep Large Caliber Chamfer

The Hornady Lock-N-Load Case Prep Large Caliber Chamfer (MPN 050170) is a precision reloading tool designed specifically for large-caliber ammunition preparation. This chamfer tool removes burrs and imperfections from the interior neck of .45 caliber and larger cartridge cases, a critical step in the reloading process that directly impacts bullet seating consistency and final cartridge concentricity. It integrates seamlessly with Hornady's Lock-N-Load case prep ecosystem, including the Case Prep Trio and Power Case Prep Center systems.

Neck chamfering removes internal case mouth deformation caused by fired brass, which occurs regardless of how carefully cases were handled. Inconsistent case mouth geometry leads to uneven bullet engagement and potential runout issues—problems that compound across a full magazine or cylinder. This tool's design produces uniform chamfering on all large-caliber cases, maintaining the dimensional consistency required for precision shooting. The compact form factor (approximately 4.75 inches in length) fits easily into any reloading station without requiring significant additional bench space.

Reloaders working with .45 ACP, .458 Socom, .300 Blackout, and other large-bore calibers depend on this tool as part of their case preparation workflow. Whether loading for precision rifle work, semi-automatic platforms, or handgun ammunition, proper neck preparation prevents seating inconsistencies. Users benefit from the standardized Lock-N-Load mounting interface, which allows quick tool swaps without reconfiguration. This chamfer is essential for shooters who prioritize ammunition quality and understand that case preparation forms the foundation of consistent ballistic performance.