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Rifles, Reloading, Optics, Equipment
Reloading
velocity
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<blockquote data-quote="AJ Peacock" data-source="post: 222714" data-attributes="member: 4885"><p>Those velocities are very impressive. According to Quickload, to get those velocities in a 26" barrel, the pressure would be just over 88k PSI with Retumbo. The spec is for a max pressure of just under 64k PSI. </p><p></p><p><strong>Edited: I looked closely at the settings that Quickload has for the Rum's and it appears the weighting factor for those cartridges was set for more of a cylindrical case instead of 'overbore'. So I am guessing that the pressure is less than Quickload is computing. Just FYI </strong></p><p><strong></strong></p><p><strong>Drop me your loads and I'll play with the settings to match your chronograph readings. Thanks AJ</strong></p><p><strong></strong> </p><p>I sure hope Quickload has something incorrect. What is your OAL for that round? As it does make a difference in that the longer you seat the bullet, the lower the pressure (until you get against the lands).</p><p></p><p>AJ</p></blockquote><p></p>
[QUOTE="AJ Peacock, post: 222714, member: 4885"] Those velocities are very impressive. According to Quickload, to get those velocities in a 26" barrel, the pressure would be just over 88k PSI with Retumbo. The spec is for a max pressure of just under 64k PSI. [B]Edited: I looked closely at the settings that Quickload has for the Rum's and it appears the weighting factor for those cartridges was set for more of a cylindrical case instead of 'overbore'. So I am guessing that the pressure is less than Quickload is computing. Just FYI Drop me your loads and I'll play with the settings to match your chronograph readings. Thanks AJ [/B] I sure hope Quickload has something incorrect. What is your OAL for that round? As it does make a difference in that the longer you seat the bullet, the lower the pressure (until you get against the lands). AJ [/QUOTE]
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