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Rifles, Reloading, Optics, Equipment
Gunsmithing
338 edge 30 or 40 deg.?
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<blockquote data-quote="J E Custom" data-source="post: 424318" data-attributes="member: 2736"><p>There is a theory that the sharper shoulder angle improves accuracy and efficiency due to</p><p>flame front improvements but it is just theory and the 30o shoulders have proven themselves</p><p>in bench rest cartriges as stated.</p><p></p><p>The only provable thing is that less body taper improves the grip on the chamber lessening</p><p>bolt loading. one of the reasons that the "Improved cases" will show less signs of pressure</p><p>because the case is not pushed back as hard on the bolt.(It's not much but it does seam to</p><p>make a difference).</p><p></p><p>The down side is it is also harder to extract if loaded hard.</p><p></p><p>Just an observation </p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 424318, member: 2736"] There is a theory that the sharper shoulder angle improves accuracy and efficiency due to flame front improvements but it is just theory and the 30o shoulders have proven themselves in bench rest cartriges as stated. The only provable thing is that less body taper improves the grip on the chamber lessening bolt loading. one of the reasons that the "Improved cases" will show less signs of pressure because the case is not pushed back as hard on the bolt.(It's not much but it does seam to make a difference). The down side is it is also harder to extract if loaded hard. Just an observation J E CUSTOM [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Gunsmithing
338 edge 30 or 40 deg.?
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