Forums
New posts
Search forums
What's new
Articles
Latest reviews
Author list
Classifieds
Log in
Register
What's new
Search
Search
Search titles and first posts only
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Barrel Tuners- Muzzle Breaks- Barrel Harmonics Management
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="AZShooter" data-source="post: 2236373" data-attributes="member: 5219"><p>Great thread!</p><p></p><p>For those of you who read about <u>Virgil in the Secrets of the Houston Warehouse</u>, know about his idea on a specific barrel length for shooting a PPC round at 100 yds. He dealt with harmonics by using a short fat barrel. From the article: "oversized #7 contour to be used without the rifle exceeding the weight limit for Light Varmint class. The barrel was cut to 21 3/4" and target crowned.</p><p>More: "But no bit of information was, Virgil believes, more valuable than a little advice Jim Gilmore passed along. Jim said a barrel MUST be 21 3/4" long for optimum accuracy. That precise length, he stated, sets up a vibration pattern that duplicates well from shot to shot. Virgil faithfully followed that advice on his guns. Anyone who strictly observes the 21 3/4" doctrine will screw off a failing barrel of that length and run a new one under it. Rechambering and rethreading, in order to achieve more pristine lands just forward of the throat, shortens the barrel. Shorten the barrel, spoil the magic length."</p><p></p><p>An anecdote from the past:</p><p>I was talking to the recently retired gunsmiths Dave Miller and Curt Crum of Dave Miller Co. here in Tucson. They told me they had a problem with a custom built 300 Weatherby rifle (their favorite chambering) that wasn't responding to their usual loads. They installed a radial brake on it and it settled down. Who knows if it was the jet blast in all directions or the extra weight at end of barrel that changed the harmonics, either way it made that rifle shoot tight clusters.</p><p></p><p></p><p>While this thread is about tuners it also is about harmonics. I didn't read anything here on action screw tension. There was an article in Accurate shooter a few years ago that addressed this and it pertained to Savage actions.</p><p></p><p> <a href="https://www.accurateshooter.com/technical-articles/savage-action-screw-torque-tuning/" target="_blank">https://www.accurateshooter.com/technical-articles/savage-action-screw-torque-tuning/</a></p><p></p><p>I have experimented with action torque with every rifle I shoot from the lightest sporter hunting rifles to heavy BR rifles and none have savage actions. Most rifles showed a preference for a particular torque. This has to be part of the harmonic reduction process. FYI all rifles I own are bedded with all of most of the barrel floated.</p><p></p><p>The knowledge we can get from threads like this one run circles around those boring gun/hunting magazines.</p></blockquote><p></p>
[QUOTE="AZShooter, post: 2236373, member: 5219"] Great thread! For those of you who read about [U]Virgil in the Secrets of the Houston Warehouse[/U], know about his idea on a specific barrel length for shooting a PPC round at 100 yds. He dealt with harmonics by using a short fat barrel. From the article: "oversized #7 contour to be used without the rifle exceeding the weight limit for Light Varmint class. The barrel was cut to 21 3/4" and target crowned. More: "But no bit of information was, Virgil believes, more valuable than a little advice Jim Gilmore passed along. Jim said a barrel MUST be 21 3/4” long for optimum accuracy. That precise length, he stated, sets up a vibration pattern that duplicates well from shot to shot. Virgil faithfully followed that advice on his guns. Anyone who strictly observes the 21 3/4" doctrine will screw off a failing barrel of that length and run a new one under it. Rechambering and rethreading, in order to achieve more pristine lands just forward of the throat, shortens the barrel. Shorten the barrel, spoil the magic length." An anecdote from the past: I was talking to the recently retired gunsmiths Dave Miller and Curt Crum of Dave Miller Co. here in Tucson. They told me they had a problem with a custom built 300 Weatherby rifle (their favorite chambering) that wasn't responding to their usual loads. They installed a radial brake on it and it settled down. Who knows if it was the jet blast in all directions or the extra weight at end of barrel that changed the harmonics, either way it made that rifle shoot tight clusters. While this thread is about tuners it also is about harmonics. I didn't read anything here on action screw tension. There was an article in Accurate shooter a few years ago that addressed this and it pertained to Savage actions. [URL]https://www.accurateshooter.com/technical-articles/savage-action-screw-torque-tuning/[/URL] I have experimented with action torque with every rifle I shoot from the lightest sporter hunting rifles to heavy BR rifles and none have savage actions. Most rifles showed a preference for a particular torque. This has to be part of the harmonic reduction process. FYI all rifles I own are bedded with all of most of the barrel floated. The knowledge we can get from threads like this one run circles around those boring gun/hunting magazines. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Barrel Tuners- Muzzle Breaks- Barrel Harmonics Management
Top