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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Does the 5.56x57 (22-06) cartridge exist?
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<blockquote data-quote="benchracer" data-source="post: 840582" data-attributes="member: 22069"><p>I believe this is another area that is confusing you. Water is used to measure case volume because it takes the shape of the container. Measuring case volume by filling the case with water and re-weighing the case allows a consistent and useful basis for comparing the case capacity of different brands of brass and different chamberings.</p><p> </p><p>Water capacity in grains does not directly translate to powder capacity. It is used solely as a means of volumetric comparison.</p><p> </p><p> Different smokeless powders have different bulk densities, meaning that the same weight of powder takes up a different amount of volume depending on powder type. Generally speaking, slower powders will take up more volume versus their weight in grains. Ball powders will typically provide greater load densities (case fill) than an equivalent extruded powder.</p><p> </p><p>As an illustration of the effects of powder bulk density, pour 45 grains of H4350 into a .308 case. Then, try doing the same thing with 45 grains of Trail Boss.</p></blockquote><p></p>
[QUOTE="benchracer, post: 840582, member: 22069"] I believe this is another area that is confusing you. Water is used to measure case volume because it takes the shape of the container. Measuring case volume by filling the case with water and re-weighing the case allows a consistent and useful basis for comparing the case capacity of different brands of brass and different chamberings. Water capacity in grains does not directly translate to powder capacity. It is used solely as a means of volumetric comparison. Different smokeless powders have different bulk densities, meaning that the same weight of powder takes up a different amount of volume depending on powder type. Generally speaking, slower powders will take up more volume versus their weight in grains. Ball powders will typically provide greater load densities (case fill) than an equivalent extruded powder. As an illustration of the effects of powder bulk density, pour 45 grains of H4350 into a .308 case. Then, try doing the same thing with 45 grains of Trail Boss. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Does the 5.56x57 (22-06) cartridge exist?
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