Hornady Lock-N-Load OAL Gauge Straight

• Regulates seating depth and the resulting "jump" to the rifling
• Increases accuracy
• Red housing tube is made of aluminum
• You will need a Modified Case (sold separately) to fit your firearm's chamber and thread it onto the gauge

One of the best kept secrets in accurate reloading is precise bullet seating depth. 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.