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Rifles, Reloading, Optics, Equipment
Reloading
Powder Temperature Sensitivity
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<blockquote data-quote="Michael Eichele" data-source="post: 257711" data-attributes="member: 1007"><p>Tell that to my 300 RUM. I have tested her with RL-25 with 20 FPS difference from 75ish to -2 degrees F.</p><p></p><p>Alliant isnt as sensitive as you may be led to believe. I have seen similar results with my 308 in RL-15 and anotehr 300 RUM barrel I used to use. Granted going from 75 to 110 may be a different story. For me and most other hunters, I wont be hunting in 110 degree air and If I had to, I dont push my loads to the max anyway so it would make little difference in the excessive pressure department. For most hunters, they develop their loads in fairly warm air and hunt in much cooler air.</p><p></p><p>On the flip side of the coin, I know others who have experianced 100+ FPS in a 80 degree swing with RL powders. It just isnt predictable. Does this meen that Alliant is the MOST sensitive? Hardley. This is why one should develop a load their rifle likes best and go from there. Rifles are not biased about ambient temperatures like we are. They are harmonicaly biased though. This should come first in a load selection. You can always learn how much difference there is in an 80 degree spread and adjust you palm program accordingly. Harmonics come first. If you end up with a minimal affected load, then that is a bonus.</p></blockquote><p></p>
[QUOTE="Michael Eichele, post: 257711, member: 1007"] Tell that to my 300 RUM. I have tested her with RL-25 with 20 FPS difference from 75ish to -2 degrees F. Alliant isnt as sensitive as you may be led to believe. I have seen similar results with my 308 in RL-15 and anotehr 300 RUM barrel I used to use. Granted going from 75 to 110 may be a different story. For me and most other hunters, I wont be hunting in 110 degree air and If I had to, I dont push my loads to the max anyway so it would make little difference in the excessive pressure department. For most hunters, they develop their loads in fairly warm air and hunt in much cooler air. On the flip side of the coin, I know others who have experianced 100+ FPS in a 80 degree swing with RL powders. It just isnt predictable. Does this meen that Alliant is the MOST sensitive? Hardley. This is why one should develop a load their rifle likes best and go from there. Rifles are not biased about ambient temperatures like we are. They are harmonicaly biased though. This should come first in a load selection. You can always learn how much difference there is in an 80 degree spread and adjust you palm program accordingly. Harmonics come first. If you end up with a minimal affected load, then that is a bonus. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Powder Temperature Sensitivity
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