The Brownells Small Primer Pocket Swage Gauge (part no. SG-SP-001) checks primer pocket depth on small-primer brass after swaging or reaming, confirming the pocket is cut deep and clean enough for a new primer to seat flush and fire reliably. Made by Brownells, it’s especially useful on military-crimped surplus brass, where the crimp has to be fully removed before a primer will seat to proper depth. Handloaders use it as a quick bench check before priming a batch of processed brass.

Key Specifications

• Checks primer pocket depth on small-primer brass.
• Confirms a pocket is cut deep and clean enough for a primer to seat flush.
• Especially useful on military-crimped surplus brass after crimp removal.

Frequently Asked Questions

What does this gauge check? It checks whether a small-primer pocket has been swaged or reamed deep and clean enough for a new primer to seat flush.

Why does military brass need this check? Military-crimped brass has a crimp around the primer pocket that must be fully removed before a primer will seat to proper depth; this gauge confirms that work is done.

Buy the Brownells Small Primer Pocket Swage Gauge

Order the Brownells Small Primer Pocket Swage Gauge from Schaefer Defense’s reloading equipment selection. Our Lubbock, Texas gun shop ships fast, so serious handloaders can keep their reloading bench stocked with the exact tooling their process calls for.