What thread size does the Proshot 28 Ga Brass Bore Brush use and will it fit my standard cleaning rod?

This brush features a standard American shotgun #5/16-27 male thread interface. It is designed to directly screw into standard shotgun cleaning rods, including Pro-Shot, Dewey, and Hoppe's rods. If you are attempting to attach it to a rifle or pistol rod using #8-32 threads, you will need a suitable thread adapter.

Can I use this 28-gauge brush in a .410 bore shotgun or larger gauges like 12-gauge?

No, this brush is specifically engineered for 28-gauge shotgun bores with a nominal diameter of .550 inches or approximately 14 mm. Using it in a smaller .410 bore will cause it to bind and risk bending the solid brass core or damaging your cleaning rod. Conversely, using it in larger gauges like 12-gauge will not provide enough bristle pressure to effectively clean the bore.

Will harsh bore solvents damage the bronze bristles during heavy cleaning sessions?

While the heavy-duty phosphor bronze bristles and solid brass core provide excellent scrubbing action for lead and plastic wad residue, highly aggressive copper-removing chemical solvents containing heavy ammonia can cause bristle degradation over time. For standard lead and carbon fouling encountered by clay target shooters and upland hunters, standard gun solvents work safely without harming the brush.

28 Ga Shotgun Bore Brush - Pro-Shot 28S

The Pro-Shot 28S 28 Ga Brass Bore Brush is a dedicated shotgun bore-cleaning tool engineered specifically for 28-gauge shotgun barrels with a nominal .550 inch (approximately 14 mm) bore diameter. Manufactured in the USA, this benchrest-quality bore brush features oversized phosphor bronze bristles embedded in a solid brass core with a precision brass coupling. Designed to lift stubborn plastic wad fouling, carbon, and heavy lead deposits, the softer brass and bronze construction scrubs aggressively without scratching or etching the firearm's barrel steel. A closed looped wire end prevents chamber and bore crowning damage during routine maintenance and deep cleaning cycles.

Key Features

Oversized Phosphor Bronze Bristles: Delivers heavy-duty, dense bristle fill designed to scour plastic wad residue and lead buildup from shotgun bores while extending overall service life.
Non-Damaging Brass Core and Tip: Built with a solid brass core, brass coupling, and a looped end wire that prevents chamber, bore, or muzzle crown gouging during stroke reversals.
Standard Thread Compatibility: Equipped with standard American shotgun #5/16-27 male threads to securely interface with compatible female-threaded shotgun cleaning rods.
Safe Mechanical Cleaning: Phosphor bronze bristles remain softer than firearm barrel steel, providing vigorous scrubbing action without risk of bore abrasion.

Product Specifications

Calibre/Bore Compatibility: 28 Gauge Shotgun (.550 in / ~14 mm nominal bore diameter)
Thread Interface: #5/16-27 male shotgun thread
Bristle Material: Phosphor bronze
Core & Coupling Material: Solid brass with looped brass tip
Operation: Manual (non-powered)
Country of Origin: USA
Packaged Dimensions: 8.9 cm (L) × 6.0 cm (W) × 1.3 cm (H)
Packaged Shipping Weight: Approximately 50 g (brush net weight ~15–20 g)

Who is the Proshot 28 Ga Brass Bore Brush for?

28-Gauge Sporting Clays and Trap Competitors — requires oversized bronze bristles fitted specifically to scrub plastic wad fouling and lead deposits from .550 inch (14 mm) nominal bores during high-volume shooting sessions using a standard 28-gauge shotgun bore brush.
Upland Game Hunters Maintaining 28-Gauge Shotguns — connects via standard #5/16-27 male shotgun threads to clear field debris, powder residue, and heavy fouling from .550 inch (14 mm) shotgun barrels without risking bore wear.

Less suitable for: Firearm owners cleaning smaller .410 bores where the .550-inch brush will bind, bend, or damage the cleaning rod—requiring a dedicated .410 bore brush—or users operating standard #8-32 or #5-40 rifle and pistol cleaning rods without a dedicated #5/16-27 thread adapter.

SKU	PS41257LP
Model #	28S
Brand	Pro-Shot
Shipping Weight	1.0000kg

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Pro-Shot 28s 28 Ga Shotgun Bore Brush Bronze Bristles

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