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Rifles, Reloading, Optics, Equipment
Reloading
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<blockquote data-quote="rscott5028" data-source="post: 515711" data-attributes="member: 24624"><p>The ID of the bushing will compress the OD of the neck to a given size. </p><p> </p><p>The thickness of the neck case wall will make the ID of your neck slightly smaller than the bushing. </p><p> </p><p>You want the ID of your neck to end up .001-.002" smaller than the OD of your bullet. </p><p> </p><p>A=Case Neck Wall Thickness</p><p>B=Bushing Diameter</p><p>C=Bullet Caliber DIA</p><p> </p><p>C - .002 + 2A = B</p><p> </p><p>Case wall thickness will vary by individual case, by lot, and by mfg. Lapua is known to be very consistent. Light neck turning can improve consistency of the thickness around each individual neck to promote concentricity and even neck tension. </p><p> </p><p>You may want to have a couple of bushings on hand. </p><p> </p><p>-- richard</p></blockquote><p></p>
[QUOTE="rscott5028, post: 515711, member: 24624"] The ID of the bushing will compress the OD of the neck to a given size. The thickness of the neck case wall will make the ID of your neck slightly smaller than the bushing. You want the ID of your neck to end up .001-.002" smaller than the OD of your bullet. A=Case Neck Wall Thickness B=Bushing Diameter C=Bullet Caliber DIA C - .002 + 2A = B Case wall thickness will vary by individual case, by lot, and by mfg. Lapua is known to be very consistent. Light neck turning can improve consistency of the thickness around each individual neck to promote concentricity and even neck tension. You may want to have a couple of bushings on hand. -- richard [/QUOTE]
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