October 20th, 2015

Radical Rimfire — The Barrel-Indexing Action by Bill Myers

Bill Myers Indexing Action

The late Bill Myers was recognized as one of greatest rimfire smiths who ever lived. Myers crafted many match-winning, record-setting rimfire benchrest rigs. Here we feature one of Bill’s most interesting creations — a clamping action that allows a rimfire barrel to be indexed (rotated) around the bore axis.

Bill was a creative thinker, and his own exhaustive testing has convinced him that barrel indexing can enhance accuracy in rimfire benchrest guns. Myers did acknowledge that, particularly with a very good barrel, the advantages of indexing may be subtle, and extensive testing may be required. Nonetheless, Myers believed that indexing could improve rimfire accuracy.

Indexing with the Myers’ Clamping Action
To index the barrel, Myers simply loosens the three clamping-bolts and rotates the barrel in the action. Because there is no thread to pull the barrel in or out, the headspace stays the same no matter how much the barrel is rotated. In other words you can rotate the barrel to any position on the clockface and the headspace remains unchanged.

Bill Myers Indexing Action
Bill Myers Indexing Action

The Challenge of Barrel Indexing
cone breech bill myers rimfire indexable actionWith a conventional barrel installation, employing a shoulder with a threaded tenon, it is difficult to index the barrel. Even with a cone breech (photo right) that eliminates the problem of extractor cuts, you’d have to use shims to alter the barrel index position, or otherwise re-set the shoulder each time you screwed the barrel in further.

Clamping Action Allows Barrel to Be Rotated to Any Position
Bill has come up with a masterful solution to barrel indexing. He designed and built his own prototype custom action that clamps the barrel rather than holding it with threads. The front section of the action is sliced lengthways, and then clamped down with three bolts. A special bushing (the gold-color piece in photos) fits between the barrel and the action. By using bushings of different inside diameters, Bill can fit any barrel up to an inch or so diameter, so long as it has a straight contour at the breech end. To mount the barrel, Bill simply places the fitted bushing over the barrel end-shank, then slips the “sleeved” barrel into the front end of the action. Tighten three bolts, and the barrel is secure.

Bill Myers Indexing Action

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November 26th, 2012

Check Out the Many Features of AccurateShooter.com

We’ve learned that many first-time visitors to AccurateShooter.com may come in via a link to the Daily Bulletin rather than through our home page. As a result, they may not be aware that there is a wealth of other content available to our readers. Our Shooters’ Forum, with 19,300 registered members, is one of the best places on the web to discuss precision shooting and advanced reloading. We also offer FREE Forum Classifieds. On the editorial side, AccurateShooter.com offers hundreds of pages of content, with thousands of photos. Our Cartridge Guides are definitive one-stop resources for popular match calibers, while our Guns of the Week articles spotlight outstanding custom rifles, most with competition pedigrees. In addition, we offer videos, gear reviews, book reviews, gunsmithing tips, and even FREE downloadable targets.

If you’re a new visitor to AccurateShooter.com, you should check out all that we have to offer. There are hundreds of informative articles to read … and they’re all FREE.

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December 5th, 2010

Check Out Our New Category Index Pages

AccurateShooter.com IndexMost of our regular visitors observed that we activated our new, enhanced AccurateShooter.com website a couple weeks ago, but there are many cool features you may not have tried out yet.

NEW Category Index Pages with Photos
We have created Category Index Pages with thumbnails that are easy to navigate. You’ll find 16 different category pages, such as Cartridge Guides, Competition, Hunting, Optics, Reloading, Rimfire, Shooting Skills, Tactical and more. On any Category page you can see thumbnails and a short summary of each article.

Here’s how to navigate on the Category Index Pages. First, at the top, you’ll see four thumbnails, with blue arrows on the left and right. Simply click the arrows to see four more articles appear at the top. You can also scroll down to see the articles in a grid format.

Switch Categories with Pull-Down Menu
Let’s say you want to switch from Competition to another category, such as Gear Reviews, Optics, or Cartridge Guides. That’s really easy. At the upper right, you’ll see a pull-down menu that includes all the Categories. Just select the category you want and click the GO button.

To read a story, click on the square photo (thumbnail) or click on the story title just below the thumbnail photo. In addition to the Category Index pages you can also find articles using the search field, found in the upper right-hand corner of every page. Just type what you want and click the red “Search” button.

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