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Rifles, Reloading, Optics, Equipment
Gunsmithing
Muzzle brake cleaning
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<blockquote data-quote="tobnpr" data-source="post: 2047485" data-attributes="member: 68758"><p>Here's the issue with timing brakes perfectly. I'm all ears if someone has a better way</p><p>Thread "crush" is impossible to quantify precisely, whether it's the barrel shoulder to the receiver ring, or a muzzle device to muzzle shoulder. No question, when perfectly square and faced surfaces are mated it is minimal. One can literally "wring" a brake tight (like gage blocks) when the surfaces are precise.</p><p></p><p>While I know my shoulder is correct, there often is minor misalignment on the brake itself, no different than any other high volume production part- we all know that's why receivers need truing for optimal results.</p><p></p><p>To my point, the setup holding the barrel- whether chambering, or working the muzzle end, is tenuous when using spiders at both ends. One can't torque on a receiver, or brake to desired end values without risking shifting the barrel. So, we're left with an educated guess as to how much more the part will rotate past hand-tight when final torque is applied. Just a couple of degrees of over-rotation can be visually evident on many brakes.</p><p></p><p>Because of this, there are times when the brake is precisely timed at less than full torque. When using threadlocker or Rocksett, this becomes a moot point. The shoulders will keep the brake perfectly aligned, the Rocksett prevents it from vibrating loose. If removed, and the owner torques to full recommended value (usually 20-40 ft/lbs) they will find it going a degree or two beyond perfect alignment.</p><p></p><p>That all said, it makes absolutely no difference from a practical perspective whether the brake is timed perfectly, or a degree or two "off" either direction. It is a visual distraction, however.</p><p></p><p>JMO, YMMV.</p></blockquote><p></p>
[QUOTE="tobnpr, post: 2047485, member: 68758"] Here's the issue with timing brakes perfectly. I'm all ears if someone has a better way Thread "crush" is impossible to quantify precisely, whether it's the barrel shoulder to the receiver ring, or a muzzle device to muzzle shoulder. No question, when perfectly square and faced surfaces are mated it is minimal. One can literally "wring" a brake tight (like gage blocks) when the surfaces are precise. While I know my shoulder is correct, there often is minor misalignment on the brake itself, no different than any other high volume production part- we all know that's why receivers need truing for optimal results. To my point, the setup holding the barrel- whether chambering, or working the muzzle end, is tenuous when using spiders at both ends. One can't torque on a receiver, or brake to desired end values without risking shifting the barrel. So, we're left with an educated guess as to how much more the part will rotate past hand-tight when final torque is applied. Just a couple of degrees of over-rotation can be visually evident on many brakes. Because of this, there are times when the brake is precisely timed at less than full torque. When using threadlocker or Rocksett, this becomes a moot point. The shoulders will keep the brake perfectly aligned, the Rocksett prevents it from vibrating loose. If removed, and the owner torques to full recommended value (usually 20-40 ft/lbs) they will find it going a degree or two beyond perfect alignment. That all said, it makes absolutely no difference from a practical perspective whether the brake is timed perfectly, or a degree or two "off" either direction. It is a visual distraction, however. JMO, YMMV. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Muzzle brake cleaning
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