KleenBore A163 .338/8mm Rifle Bore Brush - Phosphor Bronze 8-32 Thread

The KleenBore A163 bore brush delivers thorough cleaning for .338 and 8mm rifle calibers with phosphor bronze bristles that remove fouling without damaging barrel surfaces. This precision-manufactured cleaning tool features the standard 8-32 thread pattern found on most rifle cleaning rods.

What Makes This Different

Phosphor bronze bristles provide the optimal balance between cleaning effectiveness and barrel protection, unlike steel brushes that can cause premature wear or nylon brushes that lack sufficient scrubbing power. The A163's bristle density and length are specifically calibrated for .338 and 8mm bore diameters, ensuring complete contact with rifling grooves. KleenBore's manufacturing process creates uniform bristle tension across the entire brush surface for consistent cleaning performance.

Key Features

• Phosphor bronze bristles remove copper fouling and carbon buildup effectively
• 8-32 thread pattern fits standard rifle cleaning rods
• Precision-sized for .338 Winchester Magnum, .338 Lapua, and 8mm Mauser calibers
• Corrosion-resistant bronze construction withstands cleaning solvents
• Uniform bristle density ensures even cleaning pressure
• Looped and wound bristle attachment prevents bristle loss during use
• Made in USA with quality control standards

Regular use of the A163 maintains accuracy by removing fouling that affects bullet trajectory and velocity consistency. The phosphor bronze material works effectively with both traditional powder residues and modern copper-jacketed bullet fouling. Competition shooters rely on this brush type to maintain sub-MOA accuracy between matches, while hunters use it to ensure reliable performance in field conditions.

Technical Specs

• Caliber: .338/8mm (.338 inch diameter)
• Thread: 8-32 male threading
• Bristle Material: Phosphor bronze
• Overall Length: Approximately 2.5 inches
• Bristle Length: 0.75 inches
• Core Material: Steel wire with bronze bristles
• Compatible Calibers: .338 Win Mag, .338 Lapua, 8mm Mauser, 8x57mm
• Manufacturer: KleenBore (Kleen-Bore Inc.)

The A163 represents proven cleaning technology that maintains barrel condition without excessive wear. Professional gunsmiths stock this brush because it delivers consistent results across thousands of cleaning cycles. Quality rifle maintenance requires the right tools, and this phosphor bronze brush provides the cleaning power needed for precision rifle care.