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Hunting
Long Range Hunting & Shooting
7 PRC Powder burn rate vs velocity? I don't understand.
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<blockquote data-quote="Doom2" data-source="post: 3079774" data-attributes="member: 108323"><p>A slower powder reduces the peak pressure at the expense of burning the power longer and further down the barrel (area under the curve). This is why pressure signs tend to be reduced. However, since they burn slower there is a higher likelihood that they will not burn out completely before the bullet exits the muzzle. </p><p></p><p>Several years ago I tried 2000MR in my 20" 308. The velocities were about 75fps higher than with 4064 but the report and muzzle flash were unreal. Several people thought that I had blown up the rifle!</p></blockquote><p></p>
[QUOTE="Doom2, post: 3079774, member: 108323"] A slower powder reduces the peak pressure at the expense of burning the power longer and further down the barrel (area under the curve). This is why pressure signs tend to be reduced. However, since they burn slower there is a higher likelihood that they will not burn out completely before the bullet exits the muzzle. Several years ago I tried 2000MR in my 20" 308. The velocities were about 75fps higher than with 4064 but the report and muzzle flash were unreal. Several people thought that I had blown up the rifle! [/QUOTE]
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7 PRC Powder burn rate vs velocity? I don't understand.
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