KleenBore A178 Bore Brush .25/.243/6mm/6.5mm 8-32 Thread Bronze

The KleenBore A178 bore brush delivers thorough cleaning performance for multiple rifle calibers including .25, .243, 6mm, and 6.5mm chamberings. This phosphor bronze bristle brush removes fouling and residue that standard patches cannot reach, maintaining barrel accuracy and extending firearm life.

What Makes This Different

Phosphor bronze bristles provide the ideal balance between cleaning effectiveness and barrel protection, being harder than copper fouling but softer than steel barrels. The 8-32 thread pitch ensures compatibility with most standard cleaning rods, while the precise bristle density maximizes contact with rifling grooves. Unlike steel brushes that can cause barrel wear or nylon brushes that lack cleaning power, phosphor bronze maintains consistent performance through hundreds of cleaning cycles.

Key Features

• Multi-caliber compatibility: .25, .243 Winchester, 6mm, and 6.5mm rifle bores
• Phosphor bronze bristles resist corrosion and maintain stiffness
• Standard 8-32 threading fits most cleaning rod systems
• Tight bristle weave ensures complete bore contact
• Looped and wound construction prevents bristle loss
• Professional-grade materials for extended service life
• Precise caliber sizing prevents damage from oversized brushes

This brush excels in removing powder residue, copper fouling, and lead deposits that accumulate during extended shooting sessions. Competition shooters rely on thorough bore cleaning to maintain sub-MOA accuracy, while hunters need reliable cleaning tools for field maintenance. The phosphor bronze construction resists the corrosive effects of cleaning solvents and maintains bristle integrity in extreme temperatures.

Technical Specs

• Thread: 8-32 standard cleaning rod pitch
• Calibers: .25, .243 Winchester, 6mm, 6.5mm rifle bores
• Bristle material: Phosphor bronze alloy
• Construction: Looped and wound bristle attachment
• Brush length: Approximately 2.5 inches overall
• Core material: Steel wire twisted construction
• Manufacturer: KleenBore, established cleaning equipment specialist

Professional gunsmiths and serious shooters choose phosphor bronze for its proven cleaning effectiveness without barrel damage. The A178 model represents decades of bore brush engineering, delivering consistent results that maintain firearm accuracy and reliability.