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Rifles, Reloading, Optics, Equipment
Reloading
Neck Bushing Sizes
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<blockquote data-quote="nksmfamjp" data-source="post: 1898412" data-attributes="member: 1951"><p>Lots of formulas here, so I'll post what is working for me..</p><p></p><p>bullet dia + 2x(neck thickness)- neck tension-sizing springback = bushing size</p><p></p><p>tonight this was .308 + 2x0.0137" - 0.002 - 0.0008 = 0.3326 or 0.333</p><p></p><p>IMO, the 0.0008" varies 0.0005-0.001 or so...</p><p></p><p>Also, this is neck turned brass. You may have to use the min neck thickness of 3-5 brass.</p></blockquote><p></p>
[QUOTE="nksmfamjp, post: 1898412, member: 1951"] Lots of formulas here, so I’ll post what is working for me.. bullet dia + 2x(neck thickness)- neck tension-sizing springback = bushing size tonight this was .308 + 2x0.0137” - 0.002 - 0.0008 = 0.3326 or 0.333 IMO, the 0.0008” varies 0.0005-0.001 or so... Also, this is neck turned brass. You may have to use the min neck thickness of 3-5 brass. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Neck Bushing Sizes
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