Hornady Lock-N-Load Cartridge Gauge 6mm GT
S117924
- Go/No-Go drop-in gauge for 6mm GT — checks sized cases and loaded rounds
- Checks shoulder headspace to confirm the case shoulder is set to SAAMI specification
- Flags cases that have stretched beyond maximum case length and require trimming
- Identifies body diameter bulges near the web that could cause chambering failures
- Cylindrical precision steel construction machined to SAAMI tolerances for 6mm GT
- Simple drop-in check — case head flush or recessed indicates a correct fit
- Calibre-specific design; one gauge per cartridge for reliable, repeatable results
The Hornady Lock-N-Load Cartridge Gauge for 6mm GT is a calibre-specific drop-in cylinder tool designed to let reloaders check their sized cases and loaded rounds against SAAMI chamber tolerances. It inspects three critical dimensions in a single pass: shoulder headspace confirms the sizing die has set the case shoulder to SAAMI specification; maximum case length flags brass that has stretched past its safe limit and needs trimming; and body diameter inspection identifies bulges near the web area that would prevent the round from chambering cleanly. The 6mm GT is a precision benchrest and long-range target cartridge developed by Hornady and George Gardner of GA Precision, designed for exceptional accuracy and consistency at extended ranges — making case preparation to tight tolerances especially important. Drop the case into the gauge — a flush or recessed case head confirms a correct fit. A fast, accurate check that ensures your 6mm GT brass is ready for the press and the range.
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