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Rifles, Reloading, Optics, Equipment
Reloading
28 Nosler advice needed
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<blockquote data-quote="jtmpilot" data-source="post: 1476648" data-attributes="member: 88043"><p>Unfortunately I don't have any rock solid numbers for you as far as specific velocities at specific temps. I shoot mostly in Florida and I can tell you that my velocities and corresponding pressure signs would definitely spike with heat. For example, according to my Lab Radar unit my loads would stay consistently between 3120 and 3150 if I kept my loads in the shade. As soon I left them out in the sun once or twice I had a few shots spike up just over 3200 FPS....I also noticed much bigger standard deviations and extreme spreads if I left them exposed to the hot sunshine for any length of time. Obviously these loads were max loads when kept cool and too hot when they became warm, so I have since backed off and keep the velocities in the 3050 fps range when cool to give myself a safety margin to account for heating. I don't really have specific enough numbers to assign any kind of temp sensitivity factor to RL33...I just know it is more sensitive than most powders I use.</p></blockquote><p></p>
[QUOTE="jtmpilot, post: 1476648, member: 88043"] Unfortunately I don't have any rock solid numbers for you as far as specific velocities at specific temps. I shoot mostly in Florida and I can tell you that my velocities and corresponding pressure signs would definitely spike with heat. For example, according to my Lab Radar unit my loads would stay consistently between 3120 and 3150 if I kept my loads in the shade. As soon I left them out in the sun once or twice I had a few shots spike up just over 3200 FPS....I also noticed much bigger standard deviations and extreme spreads if I left them exposed to the hot sunshine for any length of time. Obviously these loads were max loads when kept cool and too hot when they became warm, so I have since backed off and keep the velocities in the 3050 fps range when cool to give myself a safety margin to account for heating. I don't really have specific enough numbers to assign any kind of temp sensitivity factor to RL33...I just know it is more sensitive than most powders I use. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
28 Nosler advice needed
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