The Proshot .50 Cal. / 12.7mm Bronze Bristle Chamber Brush is a dedicated firearm maintenance tool engineered specifically to scrub carbon, lead, and copper fouling from large-bore rifle chambers. Built with heavy-duty phosphor bronze bristles, this chamber brush features a stepped profile designed to clean chamber walls, neck, and throat areas. Its softer-than-steel brass core and looped end protect critical locking lug recesses and chamber surfaces from mechanical scratching during manual cleaning routines.

Key Features

• Chamber-Specific Profile: Stepped bronze bristle geometry targets fouling buildup across the chamber walls and case neck/throat sections to help prevent stuck cases and hard bolt closures.
• Non-Damaging Brass Core: Constructed with a solid brass wire core and looped tip that will not abrade or damage steel locking surfaces or chamber walls.
• Standard Thread Connection: Equipped with an industry-standard #8-32 thread coupling for broad compatibility with standard rifle cleaning rods and pull-through systems.
• Corrosion-Resistant Bristles: Heavy-duty phosphor bronze bristles provide firm scrubbing tension while tolerating standard carbon-cutting cleaning solvents and gun oils.

Specifications

• Calibre Compatibility: .50 Calibre / 12.7mm (.50 BMG and large-bore .50 platforms)
• Bristle Material: Phosphor bronze
• Core Material: Solid brass with looped tip
• Coupling Material: Brass
• Thread Fitting: Standard #8-32 thread
• Operation: Manual hand cleaning

Who is the Proshot .50 Cal. / 12.7mm Bronze Bristle Chamber Brush for?

• Civilian target shooters operating .50 BMG bolt-action rifles — provides a dedicated .50 Calibre / 12.7mm chamber brush with a standard #8-32 thread fitting to remove heavy carbon and copper deposits from oversize chamber walls and throat areas.
• Sporting shooters and collectors maintaining large-bore .50 calibre platforms — utilizes a brass-core construction scaled to 12.7mm chamber geometry to clean critical action recesses without scoring or abrading steel locking lugs.

Less suitable for: Rifles chambered below .50 Calibre / 12.7mm (such as .308 Win, .338 Lapua, or .375 CheyTac platforms), which require smaller, calibre-matched chamber brushes to avoid bore and chamber binding.