Burstfire Neck Tension Case Mouth Gauge

The Burstfire Neck Tension Case Mouth Gauge delivers precision measurement for reloaders who demand consistent projectile seating and optimal ammunition accuracy. Crafted from durable stainless steel, this essential tool measures the inside diameter of sized brass case necks to prevent excessive or insufficient tension.

Featuring a 5-step design with 0.001-inch increments, the stepped tool allows you to instantly verify your case neck tension from 0.001 to 0.005 inches. It provides rapid, reliable feedback during case prep to ensure peak performance across handloaded bore sizes.

Key Features

Highlights

• Accurately measures the amount of tension inside the neck of brass cases, ensuring consistent and precise neck tension for projectile seating.
• Neck tension gauges allow for the measurement of the inside diameter of case necks to avoid excessive or insufficient neck tension, which can affect the accuracy and performance of ammunition.
• The neck tension gauge is a 5-stepped diameter metal tool. Insert the tool into the neck of the sized case and slide it until one of the diameters fits snugly. The notches indicate neck tension from 0.001 to 0.005.
• The Neck Tension Gauge is a tool for reloaders or shooters who demand accuracy and consistency from their ammunition.
• The 5-Step Gauge features 0.001 increments starting at 0.001 below projectile dimension. For example, a .224 gauge starts at .223 at the bottom and goes up to .219. For precision loading, 0.001 neck tension is typically sought, meaning the case should stop on the first notch from the bottom. If it bottoms out, there may be insufficient neck tension; if it cannot be inserted to the top notch (0.219), there may be excessive neck tension.

Compatibility

Designed for precision case prep across common Precision bore sizes including .224, .243, .264, .277, .284, .308, and .338.

How to use

Insert the stepped metal gauge into the neck of your sized brass case and gently slide it inward until it fits snugly against one of the diameter steps. Stopping at the first notch indicates 0.001-inch neck tension, while each subsequent notch indicates an additional 0.001-inch increment up to 0.005 inches.