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Rifles, Reloading, Optics, Equipment
Gunsmithing
Minimum muzzle diameter for 1/2x28 threads
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<blockquote data-quote="tobnpr" data-source="post: 2476162" data-attributes="member: 68758"><p>^^^</p><p>10-4.</p><p>What's missing from consideration in that, is the groove diameter of the barrel.</p><p>That works out to .050 shoulder with a 1/2" brake on a .600 barrel- which is adequate for brakes.</p><p></p><p>However, the barrel wall thickness remaining beyond the thread minor diameter is a critical consideration.</p><p>Whole 'lotta difference between a .338 and a .22 cal. in terms of how much steel is left after threading a 1/2" muzzle</p><p></p><p>Muzzles that have barrel wall thickness that is too thin often get "bell-mouthed"- where the bore is enlarged due to inability to take the pressures. It's real, I've measured it with gage pins. LRI states it as well on his website, if ya don't want to take my word for it:</p><p></p><p>[URL unfurl="true"]https://www.longriflesinc.com/products/gunsmithing-services-muzzle-threading?variant=11313326913[/URL]</p><p></p><p></p><p>Your rifle, your call. This really isn't complicated- they probably already have a mount that will index on the muzzle.</p><p>$75-$100 to have it threaded plus the cost of the mount, versus the cost a new barrel. Not even close $$-wise.</p></blockquote><p></p>
[QUOTE="tobnpr, post: 2476162, member: 68758"] ^^^ 10-4. What's missing from consideration in that, is the groove diameter of the barrel. That works out to .050 shoulder with a 1/2" brake on a .600 barrel- which is adequate for brakes. However, the barrel wall thickness remaining beyond the thread minor diameter is a critical consideration. Whole 'lotta difference between a .338 and a .22 cal. in terms of how much steel is left after threading a 1/2" muzzle Muzzles that have barrel wall thickness that is too thin often get "bell-mouthed"- where the bore is enlarged due to inability to take the pressures. It's real, I've measured it with gage pins. LRI states it as well on his website, if ya don't want to take my word for it: [URL unfurl="true"]https://www.longriflesinc.com/products/gunsmithing-services-muzzle-threading?variant=11313326913[/URL] Your rifle, your call. This really isn't complicated- they probably already have a mount that will index on the muzzle. $75-$100 to have it threaded plus the cost of the mount, versus the cost a new barrel. Not even close $$-wise. [/QUOTE]
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Gunsmithing
Minimum muzzle diameter for 1/2x28 threads
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