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Rifles, Reloading, Optics, Equipment
Gunsmithing
300 PRC throat reamer on a 300 win mag build
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<blockquote data-quote="Edd" data-source="post: 1881214" data-attributes="member: 30592"><p>Yes, you can use a .3088" throat reamer on a 300 Win Mag chamber. Was the chamber cut with a SAAMI reamer or a custom reamer that didn't have a throat? The throat of a SAAMI 300 Winchester chamber isn't actually a .315" diameter, it is cone shaped. The back of the throat starts at .315" and tapers at ~ 1.444° to bore diameter of .300".</p><p></p><p>If the chamber has been cut with a SAAMI reamer, you are still going to have a cone about 1/8" long before the parallel freebore starts.</p></blockquote><p></p>
[QUOTE="Edd, post: 1881214, member: 30592"] Yes, you can use a .3088" throat reamer on a 300 Win Mag chamber. Was the chamber cut with a SAAMI reamer or a custom reamer that didn't have a throat? The throat of a SAAMI 300 Winchester chamber isn't actually a .315" diameter, it is cone shaped. The back of the throat starts at .315" and tapers at ~ 1.444° to bore diameter of .300". If the chamber has been cut with a SAAMI reamer, you are still going to have a cone about 1/8" long before the parallel freebore starts. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Gunsmithing
300 PRC throat reamer on a 300 win mag build
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