The Hornady Primer Pocket Uniformer Small (Model: 041212) is a precision-machined tool steel case preparation head engineered to true small primer pockets. It cuts the bottom of cartridge primer pockets to a consistent depth while squaring the floor and corners to the case head. This process allows primers to seat uniformly beneath flush, promoting uniform firing-pin strikes and consistent ignition across handloads. Designed as a passive, unpowered mechanical accessory weighing under 50 grams, it also removes accumulated carbon fouling from the primer pocket floor during brass processing cycles.

Key Features

• Consistent Pocket Squaring: Cuts the floor of small primer pockets flat and square relative to the case head to eliminate variable seating depths.
• Carbon Removal: Cleans out stubborn carbon buildup from fired brass during routine case preparation.
• Universal Mounting Interface: Features an industry-standard 8-32 male thread to fit manual handles or multi-station electric case prep centres.
• Durable Tool Steel Construction: Precision-machined cutting surfaces maintain edge integrity during multi-case preparation runs at recommended low-to-moderate drive speeds.

Specifications

• Model Number: 041212
• Material: Precision-machined tool steel
• Thread Interface: Standard 8-32 male thread
• Primer Pocket Compatibility: Small Rifle and Small Pistol primer pockets (e.g., .223 Remington, .204 Ruger, 6mm ARC, 9mm Luger)
• Power Type: Mechanical tool head (manual or motorised station driven)
• Weight: Under 50 grams

Who is the Hornady Primer Pocket Uniformer Small for?

• Precision Target Shooters — Loading small-primer brass for benchrest or F-Class competition requires squaring pocket floors to a uniform depth across every case, and this small primer pocket uniformer mounts via an 8-32 male thread into hand or power prep tools to achieve identical primer seating depth for consistent ignition.
• Long-Range Varmint Hunters — Handloading small-primer calibres such as .223 Remington or .204 Ruger demands tight velocity spreads, and this small primer pocket uniformer integrates with any 8-32 threaded prep station to cut consistent pocket depths that minimise standard deviation across high-volume field ammunition batches.

Less suitable for: Cartridge cases manufactured with Large Rifle or Large Pistol primer pockets, which exceed this tool's cutting dimensions and require a dedicated large primer pocket uniformer, or cases featuring heavy staked or swaged military crimps, which require a dedicated primer pocket swaging tool or reamer rather than a depth-squaring cutter.