Hornady Lock-N-Load Comparator Insert .243 Diameter

• Ogive-based measurement: This insert lets the comparator measure from the bullet ogive instead of the tip, giving more repeatable seating-depth readings when bullet tips vary slightly from one projectile to another.
• .243 / 6mm caliber fit: Sized for .243 / 6mm bullets, it gives proper contact at a consistent point on the bullet profile, which helps produce more meaningful comparisons during load development.
• Steel construction: The steel body resists wear from repeated use on the bench, so the insert maintains dependable fit and measurement consistency over time.
• Works with the Lock-N-Load system: Designed for the Hornady Lock-N-Load Bullet Comparator, it allows reloaders to swap inserts by caliber rather than changing measuring methods, saving time when working across multiple loads.
• Supports precise seating-die setup: By helping compare cartridges and bullets from base to ogive, the insert makes it easier to tune bullet jump and monitor loaded-round uniformity for more consistent results on target.

About the Lock-N-Load Series

The Hornady Lock-N-Load series is built around one practical idea: making reloading operations faster to change over while keeping settings consistent. Within Hornady’s reloading lineup, Lock-N-Load products cover presses, measuring tools and accessories that are designed to reduce setup time without turning precision work into a complicated process. That makes the series especially relevant to handloaders who work with several calibers and want an efficient bench workflow.

In the measurement and case-preparation category, the series focuses on repeatability. Tools such as comparator systems are intended to measure from functional reference points rather than from surfaces that can vary from bullet to bullet. In practice, that means more consistent readings when setting seating depth, checking bullet uniformity and comparing finished cartridges. The system’s interchangeable component design is one of its defining characteristics, because it allows the same core tool to be adapted to different bullet diameters with the correct insert. Across the range, the Lock-N-Load approach combines straightforward mechanical design, durable materials and caliber-specific accessories that help reloaders maintain precision while moving efficiently between tasks.

About the Hornady Lock-N-Load Comparator Insert .243 Diameter

The Hornady Lock-N-Load Comparator Insert .243 Diameter is a caliber-specific reloading accessory made for measuring .243 / 6mm bullets at the ogive rather than at the tip. That difference matters because bullet tips can vary slightly in shape or finish, even within the same box. Measuring from the ogive gives the reloader a more stable reference point, which is more useful when comparing seated rounds, checking bullet consistency or adjusting a seating die for a chosen jump to the lands.

As part of the Lock-N-Load Bullet Comparator system, this insert is intended for reloaders who want a simple way to move between calibers while keeping the same measuring method. Instead of relying on cartridge overall length alone, the insert helps produce readings that better reflect how the bullet is actually positioned in relation to the chamber. That is particularly useful in precision handloading, where small seating-depth changes can affect pressure, consistency and group size.

The insert is made from steel, which suits repeated bench use and helps preserve a consistent interface with the comparator body. Its compact, caliber-specific design keeps the tool focused on one job: providing a repeatable contact point for .243-diameter bullets. For reloaders working with 6mm projectiles, this makes the insert a practical addition for more controlled load development and more meaningful measurement data.

About Hornady

Hornady Manufacturing was founded by Joyce Hornady in 1949 in Grand Island, Nebraska. The company remains based there and is still known as a family-owned manufacturer focused on bullets, ammunition, reloading tools and related accessories. That broad involvement in both projectile design and handloading equipment gives Hornady a strong position in the reloading category, where measuring and setup tools need to work as part of a complete system rather than as isolated accessories.

Hornady expanded its reloading-tool offering when it acquired Pacific Tool Company in 1971, and its equipment range now includes presses, dies, powder measures, scales and case-preparation tools. The company’s Lock-N-Load system is especially well known for its bushing-based quick-change design, which reflects Hornady’s emphasis on efficient bench workflow without giving up repeatability. In practical terms, that background makes Hornady a natural fit for precision measuring accessories such as comparator inserts.

Main Features

• Manufacturer: Hornady
• Made in: USA
• Material: Steel
• Application: Case preparation
• Color: Silver
• Bullet Diameter (mm): 243.00 mm
• Bullet Diameter (inch): 6.17 inch

Warranty

Hornady states a 2-year warranty for this product. This period suits a bench accessory intended for regular reloading use and provides clear manufacturer-backed coverage for defects during the stated term.