Can I use the Pro-Shot CH12 chamber brush to clean the full length of my 12-gauge shotgun barrel?

No, the CH12 features an 8-inch working length rod and is strictly designed for short-reach maintenance on chambers and forcing cones. For full-length shotgun barrel cleaning, you will need a standard-length cleaning rod of 30 to 36 inches.

Will this tool fit in a 20-gauge or .410 bore shotgun chamber?

No, the CH12 is specifically sized and tapered for 12-gauge shotgun chambers and is physically too large for 20-gauge, 28-gauge, or .410 bore chambers. Using it in smaller gauges can damage the firearm or tool; you must use a gauge-matched tool such as the Pro-Shot CH20 for 20-gauge.

What thread standard does the Pro-Shot CH12 use, and can I replace the brush head when it wears out?

The CH12 uses the standard American shotgun threading of #5/16-27 on its rigid brass rod. When the original bronze bristle brush wears down from scrubbing carbon and plastic wad residue, you can easily unscrew it and replace it with the Pro-Shot 12C replacement brush.

Does the Pro-Shot CH12 chamber tool require any electrical compliance or SAA/RCM approvals for use in Australia?

No electrical compliance or SAA/RCM certification is required because the CH12 is entirely a manual mechanical tool with no electrical components, batteries, or motors. It is completely safe and reliable for maintenance use in standard workshops or outback field conditions across Australia.

12 Gauge Chamber Tool - Pro-Shot CH12

The Pro-Shot CH12 is a manual cleaning tool designed specifically to scrub carbon fouling, burnt powder, and melted plastic wad residue from 12-gauge shotgun chambers and forcing cones. Unlike standard bore brushes that match the narrower bore diameter, this tool features an oversized, stepped bronze alloy brush wound onto a brass looped core to clean the wider dimensions of the chamber without scratching the metal. Attached to an 8-inch (~20.3 cm) rigid brass rod, it provides direct mechanical leverage to clear stubborn buildup, reducing shell sticking, extraction failures, and misfires across break-action, pump-action, and semi-automatic shotguns.

Key Features

Targeted Chamber Sizing: Engineered with an oversized, stepped bristle diameter to thoroughly scrub 12-gauge chambers and forcing cones.
Safe Bore Contact: Constructed with bronze alloy bristles on a brass looped core to prevent bore scratching during use.
Fouling and Residue Removal: Breaks up accumulated carbon and melted plastic wad buildup that causes stuck cases and extraction issues.
Modular Assembly: Built with standard American shotgun #5/16-27 threads to accept replacement brush heads (such as the Pro-Shot 12C) when worn.
Dedicated Chamber Reach: Equipped with an 8-inch (~20.3 cm) non-swivel brass rod and fixed handle for controlled scrubbing leverage.

Specifications

Model / SKU: CH12
Gauge Compatibility: 12 gauge
Thread Standard: #5/16-27
Rod Working Length: 8 inches (~20.3 cm)
Rod Material: Brass (rigid, non-swivel) with fixed handle
Brush Material: Bronze alloy bristles with brass looped core
Replacement Brush Model: Pro-Shot 12C
Operation: Manual (non-powered)

Who is the Proshot 12 Ga Chamber Brush for?

12-Gauge Clay Target Shooters: Delivers high-leverage cleaning via an 8-inch (~20.3 cm) rigid brass rod to remove heavy plastic wad fouling from high-volume shooting before extraction failures occur.
Field Hunters Using 12-Gauge Shotguns: Utilises standard #5/16-27 shotgun threading on a dedicated chamber brush to clean tight forcing cones and prevent shell sticking in field conditions.
Rural Pest Control Shooters Maintaining 12-Gauge Firearms: Uses stepped 12-gauge chamber-profile bronze bristles to clear stubborn carbon buildup and ensure cycling reliability in semi-automatic and pump-action working shotguns.

Less suitable for: Shotgun chambers in smaller gauges such as 20 ga, 28 ga, or .410 bore where the oversized 12-gauge brush diameter will not fit (requires a gauge-matched chamber tool), or for cleaning the entire length of shotgun barrels where an 8-inch rod lacks reach (requires a 30- to 36-inch full-length shotgun cleaning rod).

SKU	PS41313LP
Model #	CH12
Brand	Pro-Shot
Shipping Weight	1.0000kg

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Pro-Shot Ch12 12 Gauge Chamber Tool Bronze Brush

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