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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Improved case limits
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<blockquote data-quote="MagnumManiac" data-source="post: 552611" data-attributes="member: 10755"><p>G'day fellow Aussie!</p><p></p><p>I can't tell you where to get published info, other than P.O.Ackley's books, but I can tell you what I know.</p><p></p><p>A 45 degree shoulder is said to be the maximum angle, it's also said to be the closest to a radii shoulder like the Weatherby mags.</p><p>A 40 degree shoulder is said to be the most efficient. </p><p>Although the new 'beltless' magnums have not used this angle, they use 35 degrees, this angle is preferred, but it can and does cause feeding issues in some actions.</p><p>Minimum case taper can be run at .010", but somewhere in between .010"-.020" is desirable.</p><p></p><p>Have a look at any info you can find on the "Gibbs" line of wildcats, they use minimum case taper and sharp shoulders moved well forward than the original position of the 30-06 case they are based on.</p><p></p><p>Hope this helps you out.</p><p></p><p>Cheers.</p><p>gun)</p></blockquote><p></p>
[QUOTE="MagnumManiac, post: 552611, member: 10755"] G'day fellow Aussie! I can't tell you where to get published info, other than P.O.Ackley's books, but I can tell you what I know. A 45 degree shoulder is said to be the maximum angle, it's also said to be the closest to a radii shoulder like the Weatherby mags. A 40 degree shoulder is said to be the most efficient. Although the new 'beltless' magnums have not used this angle, they use 35 degrees, this angle is preferred, but it can and does cause feeding issues in some actions. Minimum case taper can be run at .010", but somewhere in between .010"-.020" is desirable. Have a look at any info you can find on the "Gibbs" line of wildcats, they use minimum case taper and sharp shoulders moved well forward than the original position of the 30-06 case they are based on. Hope this helps you out. Cheers. gun) [/QUOTE]
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Improved case limits
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