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Rifles, Reloading, Optics, Equipment
Reloading
Retumbo & Temperature
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<blockquote data-quote="Pdvdh" data-source="post: 516145" data-attributes="member: 4191"><p>Yes, I have. But not to the extent of your 75 fps increase with decreasing temperature. Any increase at all with decreasing temperature was a novel experience for me. But I have repeated the experience with Retumbo more than once. And I run was running dual chronographs in tandem during these events, so I know I was receiving valid velocity data. I now run triplicate chronographs which provide three separate readings for each bullet fired. Well... I actually get 4 recorded velocities. My Oehler 35P proof channel provides the 4th velocity reading.</p><p></p><p>So yes I have seen it more than once with Retumbo, but more on the order of a 10-12 fps increase as temperatures dropped down towards 0 degrees F.</p></blockquote><p></p>
[QUOTE="Pdvdh, post: 516145, member: 4191"] Yes, I have. But not to the extent of your 75 fps increase with decreasing temperature. Any increase at all with decreasing temperature was a novel experience for me. But I have repeated the experience with Retumbo more than once. And I run was running dual chronographs in tandem during these events, so I know I was receiving valid velocity data. I now run triplicate chronographs which provide three separate readings for each bullet fired. Well... I actually get 4 recorded velocities. My Oehler 35P proof channel provides the 4th velocity reading. So yes I have seen it more than once with Retumbo, but more on the order of a 10-12 fps increase as temperatures dropped down towards 0 degrees F. [/QUOTE]
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Retumbo & Temperature
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