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Rifles, Reloading, Optics, Equipment
Reloading
Help me figure out why I'm blowing primers
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<blockquote data-quote="fiftybmg" data-source="post: 1789293" data-attributes="member: 96316"><p>You should use a chronograph. If you're looking to push the envelope, a very useful tool is a 1/10000 micrometer to measure case expansion on new brass just north of the belt. It should be half of 1/10000 when you've hit maximum velocity for the powder / primer / bullet / AOL combination in your rifle. This is a useful method to load for max and still be in the pressure limit.</p><p></p><p>It is not a good idea to rely on signs of pressure with your eyes, because you can't see it till it's too late. If you don't have the micrometer, start low and don't exceed what the book says is max velocity.</p><p></p><p>Don't ever load to what other people say they loaded. Use the manual as a guide. Always work up and verify for yourself.</p><p></p><p>IMO, speed just wears everything out faster, there is no point in chasing it.</p></blockquote><p></p>
[QUOTE="fiftybmg, post: 1789293, member: 96316"] You should use a chronograph. If you're looking to push the envelope, a very useful tool is a 1/10000 micrometer to measure case expansion on new brass just north of the belt. It should be half of 1/10000 when you've hit maximum velocity for the powder / primer / bullet / AOL combination in your rifle. This is a useful method to load for max and still be in the pressure limit. It is not a good idea to rely on signs of pressure with your eyes, because you can't see it till it's too late. If you don't have the micrometer, start low and don't exceed what the book says is max velocity. Don't ever load to what other people say they loaded. Use the manual as a guide. Always work up and verify for yourself. IMO, speed just wears everything out faster, there is no point in chasing it. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Help me figure out why I'm blowing primers
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