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Hunting
Long Range Hunting & Shooting
30 cal Minimum bearing surface in case neck?
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<blockquote data-quote="Susquatch" data-source="post: 1642381" data-attributes="member: 31264"><p>I think that is for the threads above the nut, not the threads in the nut. One thread internal to the nut or hole would be ridiculous. And besides that, it's a pretty rough rule because nuts can have different thicknesses. Another reason I don't like rules of thumb.</p><p></p><p>That said, the case insertion depth is really mostly about keeping the case and bullet intact if dropped. It's also important to make sure the bullet stays in the case if the cartridge is withdrawn before shooting.</p><p></p><p>However lots of other things affect acceptable insertion depth. Case condition, sizing condition, neck friction, bullet base shape, and throat length. Even the size of the bullet matters because the alignment / holding force is not linearly proportional to caliber / bore diameter. </p><p></p><p>A million years ago, an article in Handloader magazine recommended trying to push the bullet in against a bench edge and trying to bend it against the bench top. Stone age I know, but it worked back then and probably still does.</p><p></p><p>I use whatever works for me.</p></blockquote><p></p>
[QUOTE="Susquatch, post: 1642381, member: 31264"] I think that is for the threads above the nut, not the threads in the nut. One thread internal to the nut or hole would be ridiculous. And besides that, it's a pretty rough rule because nuts can have different thicknesses. Another reason I don't like rules of thumb. That said, the case insertion depth is really mostly about keeping the case and bullet intact if dropped. It's also important to make sure the bullet stays in the case if the cartridge is withdrawn before shooting. However lots of other things affect acceptable insertion depth. Case condition, sizing condition, neck friction, bullet base shape, and throat length. Even the size of the bullet matters because the alignment / holding force is not linearly proportional to caliber / bore diameter. A million years ago, an article in Handloader magazine recommended trying to push the bullet in against a bench edge and trying to bend it against the bench top. Stone age I know, but it worked back then and probably still does. I use whatever works for me. [/QUOTE]
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30 cal Minimum bearing surface in case neck?
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