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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
You Gotta See This
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<blockquote data-quote="BountyHunter" data-source="post: 63462" data-attributes="member: 12"><p>257Speed</p><p></p><p>You must have a different book by Harold Vaugn than I do. Chapter 4, page 42 "In the course of this investigation we will find that moments that cause barrel vibration result from the recoil force acting on the recoil lug, and from the bolt thrust acting on both the bolt lugs with uneven engagement and from forces generated by the cartridge case acting on the receiver that is structurally assymetrical."</p><p></p><p>No where in the "Accuracy Facts" book does Harold Vaughn discuss "loose barrel threads and impact on harmonics". He discusses each one of the other areas in detail.</p><p></p><p>I think you are confusing chapter 6, which discusses "Barrel, Receiver Threaded Joint Motion, which discusses variables that impact barrel grouping related to oil on threads, teflon tape, rosin and other items that effect the "preload on the barrel". However that has zero to do with the harmonics.</p><p></p><p>BH</p></blockquote><p></p>
[QUOTE="BountyHunter, post: 63462, member: 12"] 257Speed You must have a different book by Harold Vaugn than I do. Chapter 4, page 42 "In the course of this investigation we will find that moments that cause barrel vibration result from the recoil force acting on the recoil lug, and from the bolt thrust acting on both the bolt lugs with uneven engagement and from forces generated by the cartridge case acting on the receiver that is structurally assymetrical." No where in the "Accuracy Facts" book does Harold Vaughn discuss "loose barrel threads and impact on harmonics". He discusses each one of the other areas in detail. I think you are confusing chapter 6, which discusses "Barrel, Receiver Threaded Joint Motion, which discusses variables that impact barrel grouping related to oil on threads, teflon tape, rosin and other items that effect the "preload on the barrel". However that has zero to do with the harmonics. BH [/QUOTE]
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