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.

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.

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.

The Hornady Lock-N-Load OAL Gauge is an extremely easy to use tool. It only takes a couple of minutes to find the overall length for a particular bullet. The tool is threaded on one end to accept specially modified cartridge cases. 

Once threaded onto the tool, a bullet is inserted into the cartridge. The tool is then inserted into the chamber of your rifle. The push rod on the tool is used to push the bullet up against the rifling. The rod is then locked in place and the tool can be removed from the rifle. You then measure across the base of the cartridge and the top of the bullet with your dial calipers (use of a bullet comparator at this time is highly recommended) to obtain the OAL. If you want to check another type of bullet, insert the new bullet into the tool and repeat steps.

SKU HORC1000
Model # C1000
Brand Hornady

Be The First To Review This Product!

Help other Scoped Out users shop smarter by writing reviews for products you have purchased.

Write a product review

We Also Recommend

  • Hornady Lock-N-Load Bullet Comparator Basic Set wi

    $71.30
    Notify Me
    Hornady Lock-N-Load Bullet Comparator Basic Set with 7 Inserts

  • Hornady Lock-N-Load Bullet Comparator Body

    $31.30
    Notify Me
    Hornady Lock-N-Load Bullet Comparator Body

  • Hornady Lock-N-Load OAL Gauge (Curved)

    $99.90
    Hornady Lock-N-Load OAL Gauge (Curved)

  • Hornady Lock-N-Load Bullet Comparator Complete Set

    $122.80
    Hornady Lock-N-Load Bullet Comparator Complete Set with 14 Inserts

  • Hornady Lock-N-Load Anvil Base Kit

    $32.10
    Hornady Lock-N-Load Anvil Base Kit

  • Hornady Lock-N-Load Bullet Comparator Insert

    $8.40
    See Options
    Hornady Lock-N-Load Bullet Comparator Insert

  • Hornady Modified Case

    $12.40
    See Options
    Hornady Modified Case

    • Others Also Bought

  • Rusan Modular Adapter clamp for Thermal

    $275.00
    See Options
    Rusan Modular Adapter clamp for Thermal

  • Rusan Monocular Adapter to suit Rusan Modular Conn

    $239.00
    See Options
    Rusan Monocular Adapter to suit Rusan Modular Connector

  • Hornady Lock-N-Load Bullet Comparator Insert

    $8.40
    See Options
    Hornady Lock-N-Load Bullet Comparator Insert

  • Hornady Cartridge Gauge

    $46.10
    See Options
    Hornady Cartridge Gauge

  • Hornady Modified Case

    $12.40
    See Options
    Hornady Modified Case

  • Hornady Primer Pocket Cleaner

    $15.70
    See Options
    Hornady Primer Pocket Cleaner

  • Hornady Universal Shellholder

    $10.20
    See Options
    Hornady Universal Shellholder

  • Redding Universal Decapping Die - Large

    $44.10
    Redding Universal Decapping Die - Large

    • More From This Category

  • HSS Tap for Hornady Modified Case

    $15.80
    HSS Tap for Hornady Modified Case

  • Hornady Lock-N-Load Bullet Comparator Insert

    $8.40
    See Options
    Hornady Lock-N-Load Bullet Comparator Insert

  • Hornady Lock-N-Load Bullet Comparator Complete Set

    $122.80
    Hornady Lock-N-Load Bullet Comparator Complete Set with 14 Inserts

  • Drill Bit for Hornady Modified Case Tap

    $12.00
    Drill Bit for Hornady Modified Case Tap

  • Hornady Lock-N-Load OAL Gauge (Curved)

    $99.90
    Hornady Lock-N-Load OAL Gauge (Curved)

  • Hornady Modified Case

    $12.40
    See Options
    Hornady Modified Case

  • HSS Tap & Drill Bit for Hornady Modified Case

    $22.50
    HSS Tap & Drill Bit for Hornady Modified Case

  • Hornady Lock-N-Load Anvil Base Kit

    $32.10
    Hornady Lock-N-Load Anvil Base Kit