- Calibre-specific gauge for 45 Auto / 45 ACP (.451-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 1911-pattern pistols
- Catches out-of-spec rounds at the bench before they cause range malfunctions
- 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 45 Auto is a calibre-specific reloading tool machined to SAAMI chamber tolerances for the 45 ACP cartridge, with its .451-inch bore diameter. Built from stainless steel with clearly marked lettering, it allows handloaders to check sized cases and finished rounds quickly at the bench — drop in the cartridge and you can see immediately whether it sits within SAAMI specification. The 45 Auto is a popular pistol cartridge among target shooters and those who reload for 1911-pattern pistols and similar semi-automatics; consistent case dimensions are critical for reliable feeding and extraction in these platforms. An over-long or under-sized case can cause feed failures or tight chambering, and catching those problems before rounds enter a magazine is far more practical than diagnosing a malfunction on the range. The Hornady Lock-N-Load Cartridge Gauge is a no-fuss addition to any 45 ACP handloading bench.
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