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Hornady

HORNADY C1550 LOCK-N-LOAD OAL GAUGE CURVED

Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.

Autoloader, Lever-action,

Pump-action rifles

Also Fits

Bolt-action and single-shot firearms

Inserts Into

Chamber through the ejection port

Not Compatible

Adapter "D" or short-bodied cases

Calipers, Modified

Cases, and bullet comparators are

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SKU: C1550-090255704174

Overview

This chamber-measuring tool is designed for hunters and reloaders working with a wide range of rifles, including autoloaders, lever-actions, pump-actions, bolt-actions, and single-shots. It inserts through the ejection port, making it a practical option for checking overall length in compatible firearms without disassembly. The curved design is intended for use with the listed rifle types, but it is not compatible with Adapter “D” or short-bodied cases. Calipers, modified cases, and bullet comparators are not included.

Why Hunters Choose the Hornady

Fits Autoloader,

Lever-action, pump-action, bolt-action, and single-shot

Inserts Into

Chamber through the ejection port

Curved Design

Suits a wide range of

Useful Shooters

Hornady Lock-N-Load OAL measurement setup

Clear Compatibility

Notes help confirm fit before

Key Features

  • Designed for autoloader, lever-action, and pump-action rifles
  • Also fits bolt-action and single-shot firearms
  • Inserts into the chamber through the ejection port
  • Not compatible with Adapter "D" or short-bodied cases
  • Calipers, modified cases, and bullet comparators are not included

Best Used For

  • Hunters setting up autoloaders, lever-action, or pump-action rifles for chamber measurement
  • Bolt-action and single-shot rifle owners needing chamber access through the ejection port
  • Reloaders working with rifles that accept the curved OAL gauge design
  • Users who already have calipers, modified cases, and bullet comparators on hand
  • Owners of short-bodied cases or Adapter D setups should verify compatibility before use

Specifications

Adapter CompatibilityNot compatible with Adapter "D" or short-bodied cases
CompatibilityFor all autoloader, lever-action, or pump-action rifles; also fits all bolt-action and single-shot firearms
Included AccessoriesCalipers, modified cases, and bullet comparators are not included
Insertion MethodInserts into chamber through ejection port

Pros

  • Fits autoloader, lever-action, pump-action, bolt-action, and single-shot rifles.
  • Inserts into the chamber through the ejection port for convenient use.
  • Curved design suits a wide range of rifle actions.
  • Useful for shooters working with Hornady Lock-N-Load OAL measurement setup.
  • Clear compatibility notes help confirm fit before purchase.

Considerations & Trade-offs

  • Calipers, modified cases, and bullet comparators are not included, so those accessories must be sourced separately if needed.
  • Not compatible with Adapter "D" or short-bodied cases, which limits use with some chambering setups.
  • Designed to insert through the ejection port, so it is intended for firearms where that access method is practical.
  • The product description does not include the measuring accessories needed to complete a full setup, so confirm compatibility with your existing tools before purchase.

Suggested Comparisons

  • Calipers and measuring tools
  • Modified cases and case gauges
  • Bullet comparators
  • Reloading setup accessories

Suggested Accessories

  • Calipers
  • Modified cases
  • Bullet comparators
  • Reloading tools

Frequently Asked Questions

What firearms is the Hornady C1550 Lock-N-Load OAL Gauge Curved designed to work with?

It is described for all autoloader, lever-action, or pump-action rifles, and it also fits all bolt-action and single-shot firearms.

How is the gauge used on the firearm?

The product inserts into the chamber through the ejection port.

Is this gauge compatible with every Hornady adapter and case type?

No. The description says it is not compatible with Adapter "D" or short-bodied cases.

Are calipers, modified cases, or bullet comparators included?

No. The description states that calipers, modified cases, and bullet comparators are not included.

What type of product is this in the Hornady line?

It is a Lock-N-Load OAL Gauge Curved, listed under hunting and shooting accessories.