Hornady Lock-N-Load Comparator Body

The Hornady Lock-N-Load projectile Comparator is designed for precision reloaders seeking consistent, accurate measurements of ammunition seating depth. By indexing directly from the projectile ogive to the cartridge base rather than measuring across variable projectile tips, it eliminates discrepancies caused by tip variations that can range up to 0.025 inches.

Crafted from durable steel, this tool easily attaches to standard caliper blades and accepts interchangeable inserts to measure a wide range of bore sizes. It provides reliable, repeatable measurements to ensure overall round uniformity and optimal cartridge seating depth during reloading.

Key Features

Brand	Hornady
Model Number	B234
Material	Steel
Product Type	projectile Comparator
Item Dimensions	7 x 4 x 2 in
Item Weight	0.18 lb
Package Weight	0.2 lb
Package Dimensions	5.83 x 3.54 x 1.61 in
Sport Type	Hunting

Highlights

• Measures seating depth from projectile ogive to cartridge base for maximum consistency
• Attaches easily to standard caliper blades
• Compatible with interchangeable inserts from .17 to .45 bore size
• Durable steel construction

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Materials & care

Constructed from precision steel. Keep clean and lightly oiled to prevent surface oxidation and preserve accurate tolerances.

Compatibility

Compatible with standard caliper blades, Hornady Lock-N-Load comparator inserts (.17 through .45 bore size), and the Hornady Lock-N-Load Overall Length Gauge.

How to use

Attach the comparator body directly onto the blade of standard calipers using the included Allen wrench. Insert the proper bore size-specific insert into the body to measure cartridge overall length and seating depth from the projectile ogive.

What's included

• Comparator body
• 7 comparator inserts for the following diameter projectiles: 224, 243, 257, 264, 277, 284 and 308
• Allen Wrench

Frequently asked questions What is the primary function of the Hornady projectile Comparator? It measures loaded rounds from the projectile ogive to the base rather than the projectile tip to ensure accurate and repeatable seating depth measurements. How does the comparator attach to measuring equipment? It easily attaches directly to the blade of a standard caliper and secures with an Allen screw. Can the comparator body be used with the Hornady Overall Length Gauge? Yes, install the comparator body onto the caliper with the screw positioned through the thicker leg to ensure proper off-center alignment with the Length Gauge. What bore size inserts are compatible with this tool? The system utilizes interchangeable comparator inserts designed to accommodate bore sizes ranging from .17 bore size up to .45 bore size.