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Rifles, Reloading, Optics, Equipment
Reloading
Changing Powder Lots
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<blockquote data-quote="EZShooter" data-source="post: 247684" data-attributes="member: 5305"><p>I may be off base, but in my experience making minute changes in powder charge doesnt do much unless you are at or near max charge <em>(when loading for 30 caliber magnum cartridges)</em> - what I am looking for is a powder that gets me to max pressure at close to a 100% load density. I have had better results when I have correlated those two factors - density and being close to max pressure, than if I make .2 grain or 2 grain changes (with the exception that once I get close to max, the changes are very small, say .2 or .3 grains). Directly responding to your question - most manuals I read state to load 5% below max charge weight whenever you change a <em>single </em>component, i.e. lots of powder, so I would think you need to go down by 3 or 4 grains and work your way up to be safe. If your primers are a different brand or lot, rework back up, if you have a different lot of powder, rework the load. The only thing I havent done is rework the load if I am using the same bullet, but from a different box... I may be overthinking this, but hey, better to be safe than sorry I say.</p></blockquote><p></p>
[QUOTE="EZShooter, post: 247684, member: 5305"] I may be off base, but in my experience making minute changes in powder charge doesnt do much unless you are at or near max charge [I](when loading for 30 caliber magnum cartridges)[/I] - what I am looking for is a powder that gets me to max pressure at close to a 100% load density. I have had better results when I have correlated those two factors - density and being close to max pressure, than if I make .2 grain or 2 grain changes (with the exception that once I get close to max, the changes are very small, say .2 or .3 grains). Directly responding to your question - most manuals I read state to load 5% below max charge weight whenever you change a [I]single [/I]component, i.e. lots of powder, so I would think you need to go down by 3 or 4 grains and work your way up to be safe. If your primers are a different brand or lot, rework back up, if you have a different lot of powder, rework the load. The only thing I havent done is rework the load if I am using the same bullet, but from a different box... I may be overthinking this, but hey, better to be safe than sorry I say. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Changing Powder Lots
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