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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Neck thickness and clearance?
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<blockquote data-quote="Rich Coyle" data-source="post: 1313654" data-attributes="member: 70559"><p>Gentlemen,</p><p></p><p>I have the answer.<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /> I found the neck thickness for a .300 Norma Magnum is .017". So I am going with a reamer for my 7mm that measures .316". That will give me .002" after I turn the neck to .015". The neck length of the .300 is .290". This 7mm will be .350" so the throat lasts longer than it would with a shorter neck. At least that's what I learned from Lonny at Hornady. It will have a 40* shoulder. The reamer will be here in 16 - 20 weeks. In the mean time I save for a scope.</p></blockquote><p></p>
[QUOTE="Rich Coyle, post: 1313654, member: 70559"] Gentlemen, I have the answer.:) I found the neck thickness for a .300 Norma Magnum is .017". So I am going with a reamer for my 7mm that measures .316". That will give me .002" after I turn the neck to .015". The neck length of the .300 is .290". This 7mm will be .350" so the throat lasts longer than it would with a shorter neck. At least that's what I learned from Lonny at Hornady. It will have a 40* shoulder. The reamer will be here in 16 - 20 weeks. In the mean time I save for a scope. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Neck thickness and clearance?
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