Upgrade your shotgun barrel tooling with the Clymer Bushing, 12 GA, .725" (18.4mm) – B725X1. This precision bronze shotgun bushing is designed for use with Clymer shotgun barrel facers and other bushing-guided tools, giving professional gunsmiths and serious hobbyists a rock-solid way to keep their cutters perfectly aligned with 12 gauge bores measuring .725" (18.4mm). Brownells+2Firearms Parts Shop+2
Whether you’re truing muzzles, cleaning up crowns, or performing other critical barrel work, this Clymer bushing helps your tooling follow the bore centerline, not the outside of the barrel, for cleaner, more accurate results.
Precision 12 Gauge Bushing for .725" (18.4mm) Bores
This model is tailored specifically as a 12 GA shotgun bushing with a .725" (18.4mm) nominal diameter:
By matching this bushing to a .725" bore, you ensure your facing or chamfering tool runs true and concentric, which is essential for maintaining pattern consistency and shot-to-shot performance.
Bronze Construction – Durable, Barrel-Friendly Alignment
Clymer shotgun bushings are made from high-quality bronze, chosen for its balance of toughness and barrel-friendly contact:
Material: Bronze bushing designed for shotgun use Firearms Parts Shop+2Brownells Schweiz+2
Bronze resists wear from rotating tools yet is softer than barrel steel, helping prevent galling and scratching
Ideal for repeated use in a professional shop environment while still protecting your customer’s bores
This makes the B725X1 a long-lasting alignment solution that you can trust on high-end barrels.
Part of the Clymer Shotgun Barrel Facer & Bushing System
Clymer’s shotgun bushings are designed to work as part of a modular system that pairs different bushings with a single barrel facer or tool body:
Fits Clymer shotgun barrel facer and other compatible bushing-guided tools
Allows you to quickly swap between different 12 GA bushing sizes (.723, .725, .727, etc.) depending on the actual bore dimension eBay+1
Ensures your tooling stays perfectly centered in the bore, even on barrels with tapered or non-uniform exteriors Brownells UK+1
If you regularly work on a variety of 12 gauge shotguns, keeping a correctly sized .725" bushing on hand is critical for precision muzzle work.
Compact, Shop-Friendly Dimensions
The Clymer 12 GA .725 (18.4mm) B725X1 is built with practical dimensions for everyday gunsmithing:
The compact form factor makes it easy to keep multiple bushings organized in a drawer or bushing rack and swap them quickly between jobs.
Universal 12 Gauge Compatibility
Listed across multiple international Brownells sites as suitable for “Universal Shotguns”, this bushing is designed to work with most 12 GA shotguns whose bores measure near .725": Brownells UK+2Brownells Deutschland+2
Ideal for field, sporting, and tactical 12 GA shotguns
Great for shops that service a wide range of brands and models
Perfect for advanced DIYers who want professional-level barrel facing results at home
As long as the bore measures correctly, the B725X1 gives you a snug, precise guide surface for your tools.
Made in the USA – Clymer Quality
Clymer is well-known for its precision gunsmithing tools, and this shotgun bushing is no exception:
Brand: CLYMER – a trusted name for reamers, gauges, and shotgun tools Brownells Schweiz+1
Country of Origin: Made in USA Brownells Schweiz+1
Designed to provide durability, precision, and reliability across years of shop use
When your work depends on precise alignment, a genuine Clymer bronze bushing is a must-have part of your setup.
Key Specs – Clymer BUSHING, 12 GA, .725 (18.4MM) B725X1
From Clymer distributors and major retailers: Brownells Iberica+3Brownells+3Firearms Parts Shop+3
Brand: Clymer
Product Type: Shotgun Bronze Bushing
Gauge: 12 Gauge
Bore Size: .725" (18.4mm)
Material: Bronze
Intended Use: For use with Clymer shotgun barrel facers / shotgun bushing systems
Weapon Type: Universal 12 GA shotguns
Manufacturer Part Number: B725X1 (also seen as B7251 in some listings) Crow Wholesale+1
Typical SKU / Item No.: 184252725 (Brownells/Crow Wholesale reference) Brownells+2Crow Wholesale+2
Why Choose the Clymer 12 GA .725 (18.4mm) Bushing?
Precisely sized for 12 GA bores at .725" (18.4mm), ensuring true, concentric tool alignment
Bronze construction provides long life while being gentle on barrel steel
Integrates seamlessly with Clymer’s shotgun barrel facer and bushing-based tooling systems
Ideal for muzzle facing, recrowning, and other barrel-end operations where accuracy and consistency are critical
Backed by Clymer’s reputation for high-quality gunsmithing equipment made in the USA
If you want to deliver clean, professional muzzle work on 12-gauge shotguns with .725" bores, the Clymer BUSHING, 12 GA, .725 (18.4MM) B725X1 is an essential part of your gunsmithing toolkit.
The End
