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Rifles, Reloading, Optics, Equipment
Gunsmithing
theading a sporter barrel?
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<blockquote data-quote="J E Custom" data-source="post: 1035587" data-attributes="member: 2736"><p>The reason I said PROBABLY NOT is.</p><p></p><p>A 1/2"x 32 TPI has a minor thread diameter of .406. </p><p>The bore is .284</p><p>The difference is .1762 Divided by two, leaves the barrel wall At .088.</p><p>The recommended MINIMUM wall thickness is .150</p><p>With 1/2'' 32 TPI threads you have almost half the recommended wall thickness.</p><p></p><p>The .223 is below the .150 with the 1/2''x 32 TPI (.118 and relies on the muzzle brake for some of its safety margin) and would be marginal but it is the standard threads for them. </p><p></p><p>A 308 would have a wall thickness of .076 if a 1/2'' x 32 TPI were used. the standard thread size for the .308 is 5/8 x 24 leaving a wall thickness of just over .150.</p><p></p><p>Just because people do something, does not make it safe. </p><p></p><p>Think about a barrel with a wall thickness of just over 1/16 thick.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1035587, member: 2736"] The reason I said PROBABLY NOT is. A 1/2"x 32 TPI has a minor thread diameter of .406. The bore is .284 The difference is .1762 Divided by two, leaves the barrel wall At .088. The recommended MINIMUM wall thickness is .150 With 1/2'' 32 TPI threads you have almost half the recommended wall thickness. The .223 is below the .150 with the 1/2''x 32 TPI (.118 and relies on the muzzle brake for some of its safety margin) and would be marginal but it is the standard threads for them. A 308 would have a wall thickness of .076 if a 1/2'' x 32 TPI were used. the standard thread size for the .308 is 5/8 x 24 leaving a wall thickness of just over .150. Just because people do something, does not make it safe. Think about a barrel with a wall thickness of just over 1/16 thick. J E CUSTOM [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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theading a sporter barrel?
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