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Rifles, Reloading, Optics, Equipment
Reloading
Pressure changes with seating depth
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<blockquote data-quote="BrentM" data-source="post: 1752582" data-attributes="member: 61747"><p>I too noticed a wave curve. Seating to the lands, which I never do anymore, produces pressure spikes, seating further reduces pressure, until you get to a point you compress the charge and reduce case volume and then pressure goes back up a little. It seems to me I had to get past 150 thou jump to see much of increase depending on the powder charge etc. </p><p></p><p>Recently I have been playing with the 156 in a prc case and found max load was well below published and velocity was low. There was no room for the powder and it spiked. Switched to a faster burn and less volume powder with the same seating depth and it produced better velocity at a lower pressure sign, or lack there of</p></blockquote><p></p>
[QUOTE="BrentM, post: 1752582, member: 61747"] I too noticed a wave curve. Seating to the lands, which I never do anymore, produces pressure spikes, seating further reduces pressure, until you get to a point you compress the charge and reduce case volume and then pressure goes back up a little. It seems to me I had to get past 150 thou jump to see much of increase depending on the powder charge etc. Recently I have been playing with the 156 in a prc case and found max load was well below published and velocity was low. There was no room for the powder and it spiked. Switched to a faster burn and less volume powder with the same seating depth and it produced better velocity at a lower pressure sign, or lack there of [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Pressure changes with seating depth
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