RCBS 90378 Primer Pocket Uniformer Large - Precision Reloading Tool

The RCBS 90378 Primer Pocket Uniformer Large ensures consistent primer seating depth and uniform pocket dimensions for enhanced accuracy in large rifle cartridges. This precision machining tool eliminates depth variations and debris that can cause misfires or inconsistent ignition.

What Makes This Different

Unlike basic pocket cleaners that simply remove residue, this uniformer cuts primer pockets to exact SAAMI specifications with a precision-ground cutting head. The tool maintains consistent 0.130-inch depth across all cases, eliminating the variations found in factory brass. High-speed steel construction provides clean cuts without tearing or deforming brass walls.

Key Features

• Precision-ground cutting head maintains exact 0.130" primer pocket depth
• High-speed steel construction resists dulling and provides clean cuts
• Compatible with large rifle primers (.210" diameter pockets)
• Ergonomic handle design reduces hand fatigue during extended use
• Self-centering pilot ensures perpendicular cuts every time
• Hardened steel construction for long service life
• Works with all standard large rifle cartridge cases

Consistent primer pocket depth directly impacts ignition timing and pressure curves, making this tool essential for precision rifle competition and long-range shooting applications. The uniformer removes manufacturing inconsistencies found in new brass while restoring fired cases to original specifications. Match shooters report improved extreme spread and standard deviation when using uniformed primer pockets across their brass preparation process.

Technical Specs

• Pocket Size: Large rifle (.210" diameter)
• Cutting Depth: 0.130" (SAAMI specification)
• Material: High-speed steel cutting head with steel handle
• Handle Length: Approximately 4 inches
• Weight: 3.2 ounces
• Compatibility: All large rifle cartridge cases
• Manufacturer: RCBS (Rock Chucker Supreme)
• Country of Origin: United States

Precision reloaders who demand consistent performance choose tools that eliminate variables rather than introduce them. The RCBS 90378 transforms inconsistent factory brass into match-grade components through precise machining rather than guesswork.