- Calibre-specific gauge for 40 S&W (.400-inch bore) reloads
- Checks sized cases and loaded rounds against SAAMI chamber dimensions
- Stainless steel construction with clearly marked lettering
- Confirms correct case dimensions for reliable feeding and extraction in semi-automatic pistols
- Catches out-of-spec rounds at the bench before they reach the range
- Fast drop-in check — no additional measuring instruments required for routine QC
- Part of the Hornady Lock-N-Load reloading accessories range
The Hornady Lock-N-Load Cartridge Gauge for 40 S&W is a calibre-specific reloading tool machined to SAAMI chamber tolerances for the 40 S&W cartridge, with its .400-inch bore diameter. Made from stainless steel with clearly marked lettering, it gives handloaders a fast and reliable bench check for sized cases and loaded rounds — drop the cartridge in and you can see straight away whether it meets specification. The 40 S&W is a semi-automatic pistol cartridge where consistent case sizing matters for reliable feeding, chambering and extraction; a case that is out of spec can cause feeding malfunctions or excessive headspace. Catching those issues at the bench, before rounds go into a magazine, is exactly what this gauge is designed for. Simple to use and requiring no additional instruments for routine quality control, the Hornady Lock-N-Load Cartridge Gauge is a practical addition to any handloading setup used for 40 S&W.
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