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Rifles, Reloading, Optics, Equipment
Reloading
How does brass affect accuracy?
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<blockquote data-quote="imyourhuckleberry" data-source="post: 2047181" data-attributes="member: 18206"><p>The brass quality is important because this will allow for more consistent pressures in the chamber. It is about having the same internal and external dimensions throughout the lot so that if you load for example, 25 grains of powder, the powder fill the case to the same level for all the other cartridges. If there are inconsistencies in the internal and external dimension of the cases that could indicate a thinner wall or a thicker wall. If it is a thinner wall the case might expand faster sealing the chamber faster as well and the pressure chamber will affect the point of impact due to harmonics of the barrel. If the case has a thicker wall within the same lot that you are reloading than the case may take a few thousands of a seconds longer to completely expand and seal the chamber allowing for some gases to come back around the case reducing the chamber pressure slightly but enough to change the harmonics of the barrel. That is why you may have a flier in a shot group that could be high or low .</p></blockquote><p></p>
[QUOTE="imyourhuckleberry, post: 2047181, member: 18206"] The brass quality is important because this will allow for more consistent pressures in the chamber. It is about having the same internal and external dimensions throughout the lot so that if you load for example, 25 grains of powder, the powder fill the case to the same level for all the other cartridges. If there are inconsistencies in the internal and external dimension of the cases that could indicate a thinner wall or a thicker wall. If it is a thinner wall the case might expand faster sealing the chamber faster as well and the pressure chamber will affect the point of impact due to harmonics of the barrel. If the case has a thicker wall within the same lot that you are reloading than the case may take a few thousands of a seconds longer to completely expand and seal the chamber allowing for some gases to come back around the case reducing the chamber pressure slightly but enough to change the harmonics of the barrel. That is why you may have a flier in a shot group that could be high or low . [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
How does brass affect accuracy?
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