--- title: "Shotgun Barrels: Back Boring and Flexible Honing" description: Flex-Hone® tools for shotgun barrels impart a smooth, polished finish while promoting optimum lubrication and resistance to corrosion, resistance and fouling. image: https://blog.brushresearch.com/hubfs/Blog_Images/Shotguns.jpeg --- - [Account Login](https://www.brushresearch.com/myaccount/) - [View Cart (0)](https://www.brushresearch.com/view-cart.php) - CALL 323-261-2193 - [![Brush Research Pintrest](https://blog.brushresearch.com/hs-fs/file-2655888633-png/brushresearch-images/pintrest.png)](http://www.pinterest.com/brushresearch/) - [![Brush Research Google+](https://blog.brushresearch.com/hs-fs/file-2655888618-png/brushresearch-images/gplus-16.png)](https://plus.google.com/+Brushresearch/posts) - [![Brush Research Linkedin](https://blog.brushresearch.com/hs-fs/file-2655888628-png/brushresearch-images/linkedin.png)](http://www.linkedin.com/company/225267?trk=pp_icon) - [![Brush Research Twiiter](https://blog.brushresearch.com/hs-fs/file-2647530532-png/brushresearch-images/twitter.png)](http://twitter.com/brushresearch) - [![Brush Research Facebook](https://blog.brushresearch.com/hs-fs/file-2647530512-png/brushresearch-images/facebook.png)](http://www.facebook.com/BrushResearch) [![Brush Research Manufacturing](https://blog.brushresearch.com/hs-fs/file-2655888638-png/brushresearch-images/logo.png)](http://www.brushresearch.com) - [About US](http://www.brushresearch.com/about.php) - [News](http://www.brushresearch.com/news.php) - [Tradeshows](http://www.brushresearch.com/tradeshows.php) - [Job Opportunities](http://www.brushresearch.com/jobs.php) - [Blog](https://blog.brushresearch.com/) - [Products](http://www.brushresearch.com/products.php) - [The Flex-Hone® Tool](http://www.brushresearch.com/product-line.php?line=1) - [The Flex-Hone® For Rotors](http://www.brushresearch.com/product-line.php?line=2) - [Flex-Hone® Tools For Firearms](http://www.brushresearch.com/product-line.php?line=3) - [Flex-Hone Kits and Accessories](http://www.brushresearch.com/product-line.php?line=4) - [Abrasive Nylon Brushes](http://www.brushresearch.com/product-line.php?line=5) - [NamPower™](http://www.brushresearch.com/product-line.php?line=13) - [Diesel and Automotive Brushes](http://www.brushresearch.com/product-line.php?line=6) - [Power Brushes](http://www.brushresearch.com/product-line.php?line=7) - [Miniature Brushes](http://www.brushresearch.com/product-line.php?line=8) - [Twisted-in-Wire Brushes](http://www.brushresearch.com/product-line.php?line=9) - [Strip Brushes](http://www.brushresearch.com/product-line.php?line=10) - [Radial Coil Brushes](http://www.brushresearch.com/custom-radial-types.php) - [Scratch and Maintenance Brushes](http://www.brushresearch.com/product-line.php?line=12) - [Parts Wash Brushes](http://www.brushresearch.com/product-line.php?line=14) - [Custom Brushes](http://www.brushresearch.com/custom-brushes.php) - [Applications](http://www.brushresearch.com/applications.php) - [Literature](http://www.brushresearch.com/literature.php) - [Catalog](http://www.brushresearch.com/literature.php?type=1) - [Technical Books](http://www.brushresearch.com/literature.php?type=2) - [Brochures](http://www.brushresearch.com/literature.php?type=3) - [Application Guides](http://www.brushresearch.com/literature.php?type=4) - [MSDS](http://www.brushresearch.com/msds.php) - [Safety Guide](http://www.brushresearch.com/safety-guide.php) - [Engineering Guide](http://www.brushresearch.com/engineering-guide.php) - [Credit and Resource Documentation](http://www.brushresearch.com/credit-resource-documentation.php) - [Tech Lab Request Forms](http://www.brushresearch.com/tech-lab-request-forms.php) - [Videos](http://www.brushresearch.com/videos.php) - [Distributors](http://www.brushresearch.com/distributors.php) - [FAQ](http://www.brushresearch.com/faq.php) - [Contacts](http://www.brushresearch.com/contact.php) ![industrial_brushes_BrushResearch-1.jpg](https://blog.brushresearch.com/hs-fs/hubfs/brushresearch-images/industrial_brushes_BrushResearch-1.jpg?width=950&name=industrial_brushes_BrushResearch-1.jpg "industrial_brushes_BrushResearch-1.jpg") # BRM Official Blog # Shotgun Barrels: Back Boring and Flexible Honing Posted by [Team BRM](https://blog.brushresearch.com/author/team-brm) on Jun 19, 2016 5:10:45 AM - [Tweet](https://twitter.com/share) ![Shotguns](https://blog.brushresearch.com/hs-fs/hubfs/Blog_Images/Shotguns.jpeg?width=300&name=Shotguns.jpeg "Shotguns")Back boring a shotgun barrel increases the size of the bore relative to the constriction of the choke for a tighter shot pattern. For hunters, target shooters, and other shotgun owners, denser patterns and larger pellets can support longer shots and greater accuracy. Back boring a shotgun can also reduce recoil, which means less intense blows to a shooter’s shoulder. Removing the right amount of material with a back bore reamer is important, but experienced gunsmiths also understand the value of an optimal surface finish. That’s why they use [Flex-Hone® tools for shotgun barrels](https://info.brushresearch.com/shotgun-barrel-hones-flex-hone-firearms) from Brush Research Manufacturing (BRM). Flex-Hone® for Firearms tools impart a smooth, polished finish while promoting optimum lubrication and resistance to corrosion, resistance and fouling. ## **How to Back Bore a Shotgun** In [Back bore a shotgun](http://rifleshooter.com/2015/08/back-bore-a-shotgun/), an article on rifleshooter.com, readers can learn how to use a metal lathe to drive a back bore reamer. As the author explains, the setup that’s described is patterned after that of a gunsmith in Ontario, Canada. Back boring with the Grizzly 4003G gunsmith’s lathe required a reamer extension, frequent tool cleaning and lubrication, and a sound understanding of where to stop the reamer. According to the article’s author, the entire fixture cost about $160 to make. The chuck, which was the most expensive part, cost about $100. By experimenting with the spindle speed and the feed rate, the author used the shotgun reamer to achieve a bright, shiny finish. Some gunsmiths consider the job done once the barrel is removed from the lathe, but this project included an important, additional step. ## **Flexible Honing for Shotgun Barrels** ![Shotgun Barrel Hones](https://blog.brushresearch.com/hs-fs/hubfs/Blog_Images/barrel_hone.jpg?width=230&name=barrel_hone.jpg "Shotgun Barrel Hones")“Honing,” the author explained, “is an absolute requirement if you do this work by hand.” So why use the [Flex-Hone® for Firearms](https://info.brushresearch.com/shotgun-barrel-hones-flex-hone-firearms) if you’ve reamed the barrel on a lathe then? BRM’s shotgun maintenance tool isn’t designed for material removal. Rather, the Flex-Hone® for shotgun barrels imparts a plateau finish that promotes lubrication and helps reduce fouling, corrosion, and wear.  Gun owners want a smooth, polished finish for the bores of their firearms, but just because a surface is shiny doesn’t mean that it’s ideal. Flexible honing removes cut, torn, and jagged metal. This deburring and surface finishing technique also imparts a uniform series of oil-retaining grooves. Flex-Hone® tools don’t require any special training or instruction. Plus, they be used with most any rotating spindle – including handheld electric drills. Still, there are some best practices to follow for tool selection and use. ## **Learn More About Flex-Hone® for Firearms Tools** Are you ready to learn more about Flex-Hone® for Firearms tools? To learn how to use BRM’s shotgun barrel hones, [watch this short video](https://info.brushresearch.com/flex-hone-firearms-instructional-video). You can also learn more about flexible honing for firearms by downloading the [Flex-Hone® for Firearms brochure](https://info.brushresearch.com/download-flex-hone-for-firearms-brochure). This free, full-color brochure includes instructions for use, and provides product specifications for all of the gun tools in the Flex-Hone® for Firearms family. 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