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Rifles, Reloading, Optics, Equipment
Gunsmithing
Measuring for a Reamer
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<blockquote data-quote="NesikaChad" data-source="post: 376562" data-attributes="member: 7449"><p>The "ideal" situation:</p><p></p><p>1. Your magazine length is long enough to do whatever you want.</p><p></p><p>2. If that is the case seat your bullet out to where the boat tail/bearing surface intersection sits just above the neck/shoulder junction of the case.</p><p></p><p>Advantages:</p><p></p><p>It keeps the bullet out of the "doughnut" ring that can (not always, but sometimes) cause variances in velocity and weird things on paper.</p><p></p><p>It maximizes the powder column potential of the case by avoiding a seating depth that has a portion of the bullet squashed down where powder is supposed to be.</p><p></p><p>Regardless of how you get there it should still start with a loaded dummy round because whoever chambers the thing is going to need some sort of reference. He may have the perfect reamer or may need to chase it with a throat reamer after the chamber is cut.</p><p></p><p>Just be sure to qualify the COAL in the magazine box prior to any barrel work so that you don't end up with a chamber that's freebored like the "pivot girl" at the homecoming game.</p><p></p><p>Good luck.</p><p></p><p>Chad</p></blockquote><p></p>
[QUOTE="NesikaChad, post: 376562, member: 7449"] The "ideal" situation: 1. Your magazine length is long enough to do whatever you want. 2. If that is the case seat your bullet out to where the boat tail/bearing surface intersection sits just above the neck/shoulder junction of the case. Advantages: It keeps the bullet out of the "doughnut" ring that can (not always, but sometimes) cause variances in velocity and weird things on paper. It maximizes the powder column potential of the case by avoiding a seating depth that has a portion of the bullet squashed down where powder is supposed to be. Regardless of how you get there it should still start with a loaded dummy round because whoever chambers the thing is going to need some sort of reference. He may have the perfect reamer or may need to chase it with a throat reamer after the chamber is cut. Just be sure to qualify the COAL in the magazine box prior to any barrel work so that you don't end up with a chamber that's freebored like the "pivot girl" at the homecoming game. Good luck. Chad [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Measuring for a Reamer
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