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Rifles, Reloading, Optics, Equipment
Reloading
Using cases as headspace gauges.
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<blockquote data-quote="Mikecr" data-source="post: 851437" data-attributes="member: 1521"><p>My head space measurements are w/respect to MY chambers(not SAAMI, or FL sized cases).</p><p>Many chambers hold their own personalities. Their body & shoulders are at slightly unique angles and diameters(affecting datums). Actions certainly have there own personalities as well.</p><p>SAAMI,, springback from FL sized,, these are unlikely to present numbers to my chamber & fitting standards.</p><p></p><p>My go/no-go gauges are used by my barrel finishers, and if I were changing barrels on a Savage I would use them. But normally I use a fully fireformed to fit case(master) for die setting, and once the numbers are logged, from my gizzys, it's very rare that I pull it out again for the same barrel. </p><p>Pretty much never for simple bumping(it's in the log).</p><p></p><p>When I do go to bumping, I pull from a single box for each specific chamber -the body die, a matched shellholder, any special gizzy.</p><p>I spin the die down snug(by hand), insert matched shellholder, size a case, measure result with gizzy, and tighten die with a wrench ever so slightly to creep into perfect match per log.</p><p>My stuff is set so close that it usually only takes a single tweak to be right on the money, and I don't even need to chamber check it. It's right.</p></blockquote><p></p>
[QUOTE="Mikecr, post: 851437, member: 1521"] My head space measurements are w/respect to MY chambers(not SAAMI, or FL sized cases). Many chambers hold their own personalities. Their body & shoulders are at slightly unique angles and diameters(affecting datums). Actions certainly have there own personalities as well. SAAMI,, springback from FL sized,, these are unlikely to present numbers to my chamber & fitting standards. My go/no-go gauges are used by my barrel finishers, and if I were changing barrels on a Savage I would use them. But normally I use a fully fireformed to fit case(master) for die setting, and once the numbers are logged, from my gizzys, it's very rare that I pull it out again for the same barrel. Pretty much never for simple bumping(it's in the log). When I do go to bumping, I pull from a single box for each specific chamber -the body die, a matched shellholder, any special gizzy. I spin the die down snug(by hand), insert matched shellholder, size a case, measure result with gizzy, and tighten die with a wrench ever so slightly to creep into perfect match per log. My stuff is set so close that it usually only takes a single tweak to be right on the money, and I don't even need to chamber check it. It's right. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Using cases as headspace gauges.
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