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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
HUMIDITY EFFECT ON GROUPS?
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<blockquote data-quote="LaHunter" data-source="post: 1914539" data-attributes="member: 54963"><p>I use IMR 7828 in my 7 mm mag. I have found that about 80-85 degrees is where I see the temp has an effect. My velocities increased and my groups opened up similar to yours. Below 80 degrees and it doesn't seem to affect my rounds. I doubt the humidity is the culprit. </p><p>RL26 seems to be well documented that temps in the 80-85 degree range will have a significant impact. </p><p>If the internet lore is correct, RL26 really pressures up around 80-85 degrees, but I have never used this powder.</p><p>Temp sensitivity is a real thing. I keep using the IMR7828 because it works so well in my rifle in normal hunting temps.</p></blockquote><p></p>
[QUOTE="LaHunter, post: 1914539, member: 54963"] I use IMR 7828 in my 7 mm mag. I have found that about 80-85 degrees is where I see the temp has an effect. My velocities increased and my groups opened up similar to yours. Below 80 degrees and it doesn't seem to affect my rounds. I doubt the humidity is the culprit. RL26 seems to be well documented that temps in the 80-85 degree range will have a significant impact. If the internet lore is correct, RL26 really pressures up around 80-85 degrees, but I have never used this powder. Temp sensitivity is a real thing. I keep using the IMR7828 because it works so well in my rifle in normal hunting temps. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
HUMIDITY EFFECT ON GROUPS?
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