Hornady Lock-N-Load Comparator Insert .224 Diameter

• Ogive-based measurement: The .224 insert measures from a consistent point on the bullet ogive instead of the tip, helping reduce variation in seating-depth checks and making cartridge comparisons more repeatable.
• .224 cal / 5.56 mm fit: Sized for .224 bullets, this insert gives reloaders a dedicated reference for common small-caliber rifle loads used in precision handloading.
• Steel construction: The steel body resists wear from repeated caliper use, so measurements stay consistent through regular bench work and frequent load development sessions.
• Lock-N-Load compatibility: Designed for the Hornady Lock-N-Load Bullet Comparator, it integrates into an established measuring system and makes caliber-specific setup straightforward.
• Better seating-die setup: By giving a more consistent base-to-ogive reference, the insert helps fine-tune bullet jump and seating depth for more uniform ammunition.

About the Lock-N-Load Series

Hornady Lock-N-Load is the company’s modular reloading system, built to make bench work faster while keeping measurements and die settings consistent. Within Hornady’s reloading lineup, the series covers presses, bushings, gauges and precision measuring tools intended for handloaders who want repeatable setup rather than trial-and-error adjustments. The design philosophy is practical: components are made to work together, change over quickly and maintain alignment once adjusted.

In the measurement category, the Lock-N-Load name is closely associated with tools that help reloaders control variables affecting cartridge consistency. Comparator systems, O.A.L. gauges and related accessories are aimed at shooters who tune ammunition for hunting rifles, varmint rifles and precision target setups. A key characteristic of the series is its use of interchangeable parts, allowing one tool body to serve multiple calibers with the correct insert or accessory. That approach keeps the system compact on the bench while still supporting detailed load development. For reloaders focused on seating depth, chamber fit and round-to-round uniformity, the series emphasizes repeatable measurement and straightforward integration with standard calipers and other common loading tools.

About the Hornady Lock-N-Load Comparator Insert .224 Diameter

The Hornady Lock-N-Load Comparator Insert .224 Diameter is a caliber-specific measuring insert for reloaders working with .224 cal / 5.56 mm bullets. Its purpose is simple but important: instead of measuring loaded rounds from the bullet tip, which can vary slightly from one projectile to another, it references the bullet at the ogive. In practice, that gives a more useful measurement for setting seating depth and comparing ammunition during load development.

For precision rifle loading, this matters because bullet tips are not always identical, even within the same box. Measuring from the ogive gives a more stable reference when adjusting a seating die, checking bullet jump or monitoring loaded rounds for consistency. That makes the insert especially useful for shooters refining handloads for tighter groups, more predictable chambering and more uniform ballistic performance.

The insert is made from steel, which suits repeated contact with caliper-mounted comparator bodies and regular workshop use. Its silver finish keeps the part easy to identify among other caliber inserts, while the compact format fits naturally into a bench setup centered on case preparation and cartridge measurement. Used with the Hornady comparator body, this insert becomes a focused tool for one of the most common small-caliber rifle diameters, giving reloaders a practical way to standardize measurements where small seating-depth changes can make a meaningful difference.

About Hornady

Hornady Manufacturing was founded by Joyce Hornady in 1949 in Grand Island, Nebraska. The company remains based in Grand Island and is known as a family-owned American manufacturer focused on bullets, ammunition, reloading tools and shooting accessories. That broad product range is important in the reloading category, where Hornady develops tools that are meant to work as part of a complete loading workflow rather than as isolated components.

Its reloading equipment includes presses, dies, powder measures, scales and case-preparation tools, which helps explain the practical, system-based design of the Lock-N-Load range. Hornady also expanded its tooling expertise through the acquisition of Pacific Tool Company in 1971, strengthening its position in reloading equipment. In this segment, the brand is especially well known for combining bench-friendly operation with precise measurement and caliber-specific accessories.

Main Features

• Manufacturer: Hornady
• Made in: USA
• Material: Steel
• Application: Case preparation
• Color: Silver
• Bullet diameter: 5.69 mm
• Bullet diameter: 224.00 inch
• Category: Comparator insert

Warranty

Hornady provides a 2-year warranty for this comparator insert. That period suits a bench tool intended for regular reloading use and supports long-term use in a precision measuring setup.

In the Box

• Hornady Lock-N-Load Comparator Insert .224 Diameter