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Rifles, Reloading, Optics, Equipment
Gunsmithing
Chambering an AR barrel
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<blockquote data-quote="Mike D Texas" data-source="post: 2967941" data-attributes="member: 71221"><p>You are correct in that it will not fit the particular extension that I have installed on this barrel. However they do make larger diameter AR15 extensions to serve cartridges like the 458 Socom, 450 Bushmaster and 50 Beowulf.</p><p></p><p>What I'm unsure of if whether the diameter is corrected with a different extension or if it's created by the appropriate reamer.</p><p></p><p>Since the headspace is created within the barrel extension my assumption was in order to have the correct diameter for the cartridge, that the opening would be enlarged with the appropriate reamer to properly fit the cartridge case diameter and cut the chamber.</p><p></p><p>I know the shoulder sets the headspace however my thinking is you don't want to use one of the other framers that would be grossly larger than the diameter of the Dasher case.</p><p></p><p>The Dasher has a ~.473 head diameter so a 458 Socom bolt will work.</p></blockquote><p></p>
[QUOTE="Mike D Texas, post: 2967941, member: 71221"] You are correct in that it will not fit the particular extension that I have installed on this barrel. However they do make larger diameter AR15 extensions to serve cartridges like the 458 Socom, 450 Bushmaster and 50 Beowulf. What I'm unsure of if whether the diameter is corrected with a different extension or if it's created by the appropriate reamer. Since the headspace is created within the barrel extension my assumption was in order to have the correct diameter for the cartridge, that the opening would be enlarged with the appropriate reamer to properly fit the cartridge case diameter and cut the chamber. I know the shoulder sets the headspace however my thinking is you don't want to use one of the other framers that would be grossly larger than the diameter of the Dasher case. The Dasher has a ~.473 head diameter so a 458 Socom bolt will work. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Chambering an AR barrel
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