Lee Precision Case Length Gauge 300 Win Mag w/ Shell Holder

The Lee Precision Case Length Gauge for .300 Winchester Magnum is a purpose-built reloading tool that gives the handloader a fast, accurate way to trim fired brass to the correct case length and square the case mouth at the same time. It is the simplest and most precise method Lee offers for case-length control, and it pairs directly with Lee's Cutter and Lock Stud or the Zip Trim system for a complete case-prep station on the reloading bench.

This kit ships as a matched two-piece set consisting of the hardened steel gauge sized specifically for 300 Win Mag (.30 caliber bottleneck cases) plus the corresponding Lee shell holder. The threaded shell holder locks the case down in the gauge so the cutter rides square against the case mouth, producing clean, repeatable trims time after time. The gauge is engineered to trim to the standard 2.600 to 2.620 inch case length for the cartridge, keeping fired brass within SAAMI spec and ready for resizing and reloading.

Manufactured from hardened steel with a silver finish, the gauge is built to last a lifetime of reloading use. It accepts one casing at a time, which is exactly what is needed for the careful, controlled trim-to-length process that full-length bottleneck rifle brass requires. Lee's compact, purpose-driven design makes this an essential bench accessory for anyone loading .300 Winchester Magnum who wants consistent case lengths and squared mouths across every batch of brass.

Key Features:

• Hardened steel case length gauge for 300 Win Mag
• Trims to 2.600-2.620 in and squares the case mouth in one step
• Includes matching Lee shell holder for the cartridge
• Use with Lee Cutter and Lock Stud, Ball Cutter, or Zip Trim
• Simple, precise, lifetime construction for the reloading bench