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Rifles, Reloading, Optics, Equipment
Reloading
Temp sensitive?
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<blockquote data-quote="J E Custom" data-source="post: 1895498" data-attributes="member: 2736"><p>Temp sensitive powder is effected most @ high temp. Temp swings of 30 or 40 degrees aren't to bad if the low temp starts at 30 degrees and goes to 70 degrees. But 70 to 90 degrees will have a larger effect in only 20 degrees and if you go to 100 degrees. The last 10 degrees can almost double the effect on the powder. In other words the higher the temp the greater the effect.</p><p></p><p>Loading during the winter months can limit use during the hotter months with some powders. A load that has very little pressure can become dangerously hot in extreme high temps. One of my favorite (Accurate) loads velocity is 3010 ft/sec during hunting season but when the temperature</p><p>reaches 90 to 100 degrees, it will soar to 3160. (A 150 ft/sec increase with hard extraction) and I wont shoot that load if the temp is much over 70 degrees.</p><p></p><p>If I hunt with that rifle during the hotter months, I switch to Varget and avoid the pressure, it doesn't shoot as well (Accurate) but it is close enough.</p><p></p><p>Sometimes heat sensitive powder just shoots better, but can be managed if you know the temp range it likes.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1895498, member: 2736"] Temp sensitive powder is effected most @ high temp. Temp swings of 30 or 40 degrees aren't to bad if the low temp starts at 30 degrees and goes to 70 degrees. But 70 to 90 degrees will have a larger effect in only 20 degrees and if you go to 100 degrees. The last 10 degrees can almost double the effect on the powder. In other words the higher the temp the greater the effect. Loading during the winter months can limit use during the hotter months with some powders. A load that has very little pressure can become dangerously hot in extreme high temps. One of my favorite (Accurate) loads velocity is 3010 ft/sec during hunting season but when the temperature reaches 90 to 100 degrees, it will soar to 3160. (A 150 ft/sec increase with hard extraction) and I wont shoot that load if the temp is much over 70 degrees. If I hunt with that rifle during the hotter months, I switch to Varget and avoid the pressure, it doesn't shoot as well (Accurate) but it is close enough. Sometimes heat sensitive powder just shoots better, but can be managed if you know the temp range it likes. J E CUSTOM [/QUOTE]
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Reloading
Temp sensitive?
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