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HORNADY B234 L-N-L BULLET COMPARATOR BODY W/SET OF 7 INSERTS
Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
$36.99
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SKU: B234-090255704051
Overview
Designed for reloaders who want more consistent cartridge measurements, this comparator shifts the reference point from the bullet tip to the ogive, where readings are less affected by tip-to-tip variation. It attaches to a caliper blade and uses interchangeable inserts covering .17 caliber to .45 caliber, making it useful for checking loaded rounds and evaluating bullet uniformity from base to ogive. When paired with an O.A.L. Gauge, it helps align the gauge for precise measurement during seating die setup and load comparison. This is a practical bench tool for careful cartridge setup, though it is intended for measurement work rather than field use.
Why Hunters Choose the Hornady
Measures Cartridge
Lengths from the ogive for
Helps Check
Bullet uniformity from base to
Attaches Easily
To the blade of a
Includes Interchangeable
Inserts for calibers from .17
Works O.a.l.
The O.A.L. Gauge for precise
Key Features
- Measures loaded rounds from the bullet ogive for consistent, precise cartridge length readings.
- Helps check bullet uniformity from base to ogive.
- Attaches easily to the blade of a caliper.
- Includes a set of 7 interchangeable inserts.
- Works with inserts available from .17 caliber to .45 caliber.
- Can be used with the O.A.L. Gauge for precise measurement setup.
Best Used For
- Handloaders seeking consistent ogive-to-ogive cartridge measurements with a caliper
- Reloaders checking bullet uniformity from base to ogive across multiple loads
- Shooters using Hornady O.A.L. Gauge for precise bullet seating setup
- Users comparing loaded rounds where tip-to-tip length varies too much
- Reloading bench work with interchangeable inserts from .17 caliber to .45 caliber
Specifications
| Attachment Method | Attaches to the blade of your caliper |
|---|---|
| Compatible Tool | O.A.L. Gauge |
| Included Inserts | Set of 7 inserts |
| Insert Size Range | .17 caliber to .45 caliber |
| Measurement Method | Measures rounds from the ogive |
| Part Number | B234 |
| Related Part Numbers | C1000, C1550 |
| Use | Check uniformity of bullets from base to ogive |
Pros
- Measures cartridge lengths from the ogive for more consistent, precise readings.
- Helps check bullet uniformity from base to ogive.
- Attaches easily to the blade of a caliper.
- Includes interchangeable inserts for calibers from .17 to .45.
- Works with the O.A.L. Gauge for precise measurement setup.
Considerations & Trade-offs
- Measures from the bullet ogive rather than the tip, so it is intended for more consistent cartridge-length checks than tip-to-tip measurement.
- Requires a caliper for use and attaches to the caliper blade, so it is a measuring accessory rather than a standalone gauge.
- The included inserts cover .17 caliber to .45 caliber, which means use is limited to those supported sizes.
- It is designed to work with the O.A.L. Gauge for precise setup, so its full utility depends on using it as part of that measurement system.
Suggested Comparisons
- Reloading measurement tools
- Caliper accessories
- Cartridge overall length gauges
- Bullet seating setup tools
Suggested Accessories
- Caliper
- O.A.L. gauge
- Bullet seating die
- Reloading bench storage
Frequently Asked Questions
What does the Bullet Comparator measure on a loaded round?
It measures rounds from the ogive rather than across the bullet tip, which the product description says is not a reliable or repeatable method.
What insert sizes are included with this set?
The description says the interchangeable inserts cover sizes from .17 caliber to .45 caliber, but it does not list the exact seven insert sizes individually.
Does this attach to a caliper?
Yes. The Bullet Comparator is described as attaching easily to the blade of your caliper.
Can it be used to check bullet uniformity?
Yes. The description says it can be used to check uniformity of bullets from base to ogive.
Is this the same as Hornady O.A.L. Gauge?
No. The description says it is used in conjunction with the O.A.L. Gauge, and it notes Hornady part number C1000 is a straight overall length gauge while C1550 is curved.