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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Barrel Tuners- Muzzle Breaks- Barrel Harmonics Management
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<blockquote data-quote="Old Rooster" data-source="post: 2228630" data-attributes="member: 108576"><p>When I was a Turbine tech back in the 1970's-1980' we ran vibration surveys on rotational equiptment,mostly turbines.One day in the late 1970's a guy I worked with and I took the IRD to the range to check for vibrational survey on my Ruger 77 30-06.With factory ammo I shot a few 1 1/2 inch groups for the survey and had a transducer tapped on the barrel at different places to check for vibrational spikes along the barrel.</p><p>The highest vibrational spikes were at the chamber end and found the true node(point of no change)not quite 1/2 way on the 22 inch barrel and at the last 2 inches of the barrel we had vibrational spikes close to the chamber end which caused vibrational undertones and overtones totally unequal like at the chamber end.</p><p>That is why I know barrel tuners work!A gunsmith made his own adjustable brake with shims to adjust for barrel harmonics.1970's was not with the times yet and even though rudimentary as it was it worked.With the exact same 30-06 180 gr Remington ammo I reduced my groups to 3/4 in at 100 yards.</p><p>I am not a brake person as it (and turbines)caused hearing loss even with hearing protection of the times but know for a fact that barrel tuners work!Sorry for long winded post.</p></blockquote><p></p>
[QUOTE="Old Rooster, post: 2228630, member: 108576"] When I was a Turbine tech back in the 1970's-1980' we ran vibration surveys on rotational equiptment,mostly turbines.One day in the late 1970's a guy I worked with and I took the IRD to the range to check for vibrational survey on my Ruger 77 30-06.With factory ammo I shot a few 1 1/2 inch groups for the survey and had a transducer tapped on the barrel at different places to check for vibrational spikes along the barrel. The highest vibrational spikes were at the chamber end and found the true node(point of no change)not quite 1/2 way on the 22 inch barrel and at the last 2 inches of the barrel we had vibrational spikes close to the chamber end which caused vibrational undertones and overtones totally unequal like at the chamber end. That is why I know barrel tuners work!A gunsmith made his own adjustable brake with shims to adjust for barrel harmonics.1970's was not with the times yet and even though rudimentary as it was it worked.With the exact same 30-06 180 gr Remington ammo I reduced my groups to 3/4 in at 100 yards. I am not a brake person as it (and turbines)caused hearing loss even with hearing protection of the times but know for a fact that barrel tuners work!Sorry for long winded post. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Barrel Tuners- Muzzle Breaks- Barrel Harmonics Management
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