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Rifles, Reloading, Optics, Equipment
Reloading
Temperature Sensitivity Experience N560 and RL-26
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<blockquote data-quote="Veteran" data-source="post: 2255550" data-attributes="member: 118038"><p>There are more than one account of RL-26 out in the forums being sensitive at very high temps, at near max loads. The books show a max load of 90.6 gr for 250 gr Scenar in .338 Lapua. I was shooting 90 and 90.1 gr. So, I think these were not extremely hot loads, and I would bet in 70 degree temps they would actually compare closely to QL predicted 2885 fps. But, in very hot temps with a hot chamber they shot 2998 ish, almost 3000 fps for 250 gr. bullet. Like I said, this is very hottish behaviour for RL-26 in those charge weights. Had to be temperature related. The N560, I previously had lots of data for it shooting 2825 to 2850 at 84.9 gr. with 250 gr Scenar. It was shooting 2916 ish. Again, had to be temps. My experience on this says these powders can be a little volatile at high temps. I had shot maybe 15-20 rounds in 30 minutes. But your chamber does not cool very fast in these temps either.</p></blockquote><p></p>
[QUOTE="Veteran, post: 2255550, member: 118038"] There are more than one account of RL-26 out in the forums being sensitive at very high temps, at near max loads. The books show a max load of 90.6 gr for 250 gr Scenar in .338 Lapua. I was shooting 90 and 90.1 gr. So, I think these were not extremely hot loads, and I would bet in 70 degree temps they would actually compare closely to QL predicted 2885 fps. But, in very hot temps with a hot chamber they shot 2998 ish, almost 3000 fps for 250 gr. bullet. Like I said, this is very hottish behaviour for RL-26 in those charge weights. Had to be temperature related. The N560, I previously had lots of data for it shooting 2825 to 2850 at 84.9 gr. with 250 gr Scenar. It was shooting 2916 ish. Again, had to be temps. My experience on this says these powders can be a little volatile at high temps. I had shot maybe 15-20 rounds in 30 minutes. But your chamber does not cool very fast in these temps either. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Temperature Sensitivity Experience N560 and RL-26
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