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Rifles, Reloading, Optics, Equipment
Reloading
Belted magnums reloading, from scratch
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<blockquote data-quote="Innovative" data-source="post: 300203" data-attributes="member: 527"><p>If your cases are accurately resized with the shoulder pushed back .001" you'll never see a headspace separation. The only exception is with break open actions like the T/C that can have a serious flex problem adding to the problem of case stretching.</p><p> </p><p><u><strong>Factory</strong> belted magnum ammunition</u> is headspaced on the belt, and they set back the shoulder .012" to .015" for a reason. Their major concern is for their ammo to always fit in any rifle chamber of the same caliber, and they have no concern for more than one shot. However, handloads NEED to be headspaced on the shoulder, and if it's done exactly right, this inherant case wear can be managed very well. If properly reloaded, you should never see a case separation - even with a belted magnum. </p><p> </p><p> The exact size of chambers (and resizing dies) vary quite a lot, so measuring is important - especially when loading already weakened belted magnum cases. The best way to measure your chamber clearance is to compare your handloads to one of your fired cases with a consistently <u>accurate</u> measuring tool. If you plan to get good life from your brass, this is definitely not overthinking a non-existant problem . . . . . it's avoiding that big once in a lifetime surprise. </p><p> </p><p>- Innovative</p></blockquote><p></p>
[QUOTE="Innovative, post: 300203, member: 527"] If your cases are accurately resized with the shoulder pushed back .001" you'll never see a headspace separation. The only exception is with break open actions like the T/C that can have a serious flex problem adding to the problem of case stretching. [U][B]Factory[/B] belted magnum ammunition[/U] is headspaced on the belt, and they set back the shoulder .012" to .015" for a reason. Their major concern is for their ammo to always fit in any rifle chamber of the same caliber, and they have no concern for more than one shot. However, handloads NEED to be headspaced on the shoulder, and if it's done exactly right, this inherant case wear can be managed very well. If properly reloaded, you should never see a case separation - even with a belted magnum. The exact size of chambers (and resizing dies) vary quite a lot, so measuring is important - especially when loading already weakened belted magnum cases. The best way to measure your chamber clearance is to compare your handloads to one of your fired cases with a consistently [U]accurate[/U] measuring tool. If you plan to get good life from your brass, this is definitely not overthinking a non-existant problem . . . . . it's avoiding that big once in a lifetime surprise. - Innovative [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Belted magnums reloading, from scratch
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