The Hornady Lock-N-Load OAL Gauge, Curved (brand part no. C1550) threads onto a Hornady modified case, sold separately for each caliber, to measure the exact seating depth at which a bullet contacts the rifling in your specific rifle’s chamber. Knowing that touch point lets a handloader set a seating die to a precise, repeatable overall length relative to the lands rather than an arbitrary factory spec, which is a key step in tuning a precision or hunting load.

Key Specifications

• Threads onto a modified case (sold separately per caliber) to reach into the rifle’s chamber.
• Measures seating depth to the lands, giving a rifle-specific reference point instead of a generic factory spec.
• Curved body design allows use on rifles where a straight gauge body would contact the bolt or action.
• Works with any caliber for which a matching Hornady modified case is available.

Frequently Asked Questions

Does this gauge include a modified case? No, modified cases are caliber-specific and sold separately; this gauge works with any modified case that matches your caliber.

Why measure to the lands instead of using a published OAL? Chamber and throat dimensions vary rifle to rifle, so measuring to the lands in your own rifle gives a far more accurate seating-depth reference than a generic published length.

Why choose the curved version over the straight gauge? The curved body clears the bolt and action on rifles where a straight gauge body would otherwise contact them during measurement.

Buy the Hornady Lock-N-Load OAL Gauge, Curved

Order the Hornady Lock-N-Load OAL Gauge from our reloading equipment selection and start seating to the lands in your own rifle. Ships fast from a Lubbock, TX gun shop.