Brownells Small Primer Pocket Swage Gauge Reloading Tool

The Brownells Small Primer Pocket Swage Gauge (model SG-SP-001) is a precision measurement tool built for reloaders who need to verify small primer pocket dimensions after swaging. It lets you check that each pocket meets the correct specification before you seat a primer, so you can keep your reloading process consistent from case to case.

Because it is dedicated to small primer pockets, the gauge gives you a direct way to confirm that swaging has produced the dimensions you expect. Use it as a checkpoint in your case preparation routine to support reliable ammunition performance and safety at the bench.

Key Features

How to use

After completing the swaging operation on a small primer pocket, insert the gauge to measure and verify the pocket dimensions. Use the reading to confirm the pocket meets the required specification before proceeding with primer seating.