The Hornady Lock-N-Load Bullet Comparator Set (brand part no. B14) solves a problem every handloader eventually runs into: measuring cartridge length across the bullet tip isn’t reliable, since tip length can vary by up to .025 inch from one round to the next even within the same box. Hornady’s comparator instead measures from the bullet’s ogive, a fixed, repeatable reference point, giving consistent, comparable readings round to round.

Key Specifications

• Measures cartridge length from the bullet ogive rather than the tip, for a repeatable reference point.
• Bullet tip length alone can vary by up to .025 inch round to round, which is exactly what this tool works around.
• Also checks bullet uniformity from base to ogive.
• Attaches to the blade of your caliper with a simple thumbscrew.
• Kit includes the comparator body plus 14 bullet inserts covering common bullet diameters.
• Insert diameters cover .172, .204, .224, .243, .257, .264, .277, .284, .308, .338, .358, .375, .416, and .458.
• Finished in silver metal for a durable, bench-ready tool.
• Thumbscrew attachment means no separate stand or fixture is needed to use it.
• Useful for checking seating-depth consistency across a whole batch, not just a single round.

Frequently Asked Questions

Why measure from the ogive instead of the bullet tip? Tip length varies by as much as .025 inch bullet to bullet, so measuring off the ogive, a fixed reference point, gives far more consistent, comparable readings.

Does this tool attach to my existing calipers? Yes, it clamps onto the blade of your caliper with a thumbscrew rather than requiring a separate dedicated tool.

How many bullet diameters does the kit cover? The set includes 14 interchangeable inserts, covering common diameters from .172 up through .458.

Buy the Hornady Lock-N-Load Bullet Comparator Set

Order the Hornady Lock-N-Load Bullet Comparator Set from our Lubbock, Texas gun shop for fast, reliable shipping, and start getting repeatable seating-depth measurements at the bench. Find it in Hornady‘s reloading equipment lineup alongside your calipers and seating die.