HuntingReloadingAccessoriesHornady Lock-N-Load O.A.L. Gauge (A Series)

Hornady Lock-N-Load O.A.L. Gauge (A Series)

25% off
223 REM
243 WIN
270 WIN
300 WIN
308 WIN
280 AI
7Mm Rem Mag
Only4in stock
ID: 260244

Product Description



Regulating seating depth and the resulting "jump" to the rifling is widely regarded as fundamental to improved accuracy. A few thousandths of an inch change between the bullet and the rifling can make the difference between average accuracy and real tack-driver performance.

The Lock-N-Load O.A.L. Gauge is universally acclaimed as the most accurate, easy-to-use, and reliable method of regulating seating depth and the resulting "jump" to the rifling.

To use the Lock-N-Load O.A.L. Gauge, you will need a Modified Case (sold separately) to fit your firearm's chamber and thread it onto the gauge. These specially prepared modified cases are threaded at the case-head and have a .002" oversized neck to accept the same bullets you intend to load.

This is critical, as the Lock-N-Load O.A.L. Gauge dimensions obtained will be accurate to .001". These results cannot be attained with competitive products, which use a simulated bullet with an arbitrary shape.

Lock-N-Load Modified Cases are readily available to fit most popular rifle chambers. All are manufactured to SAAMI specs.


  • STRAIGHT MODEL: For all bolt-action and single-shot firearms, or any firearm with straight-line access to the chamber. This model is preferred, as it is most precise and user-friendly.
  • CURVED MODEL: For all autoloader, lever-action, or pump-action rifles. Also fits all bolt-action and single-shot firearms. Inserts into chamber through ejection port. Not compatible with Adapter "D" or short-bodied cases.


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