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The Range
Ammo & Reloading
temp sensitive powders
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<blockquote data-quote="dennishoddy" data-source="post: 3061282" data-attributes="member: 5412"><p>There are some powders more temperature sensitive than others. Some are very non temperature sensitive. Varget for example is known the be temperature neutral. </p><p>The only way you would get in trouble is if you loaded a max load that slightly flattened the primer in cold weather then took that load to extreme high temp areas, but it's doubtful it would cause any damage. </p><p>Blue dot, a shotgun and pistol powder is known to be inversely temp sensitive. It actually gains pressure during colder temps. </p><p>If your curious how it may affect your load, Put some rounds in the freezer overnight, take them to the range in an ice chest with ice, and run them through a chronograph. Then put some on the dashboard of the vehicle with the windows up in the sun, and let them warm up. </p><p>You might see 100 fps difference in velocity. At normal hunting ranges under 400 yds, it's likely you wouldn't notice the difference. </p><p>If you're shooting benchrest or long range precision shooting, they pay close attention to temperature sensitivity.</p></blockquote><p></p>
[QUOTE="dennishoddy, post: 3061282, member: 5412"] There are some powders more temperature sensitive than others. Some are very non temperature sensitive. Varget for example is known the be temperature neutral. The only way you would get in trouble is if you loaded a max load that slightly flattened the primer in cold weather then took that load to extreme high temp areas, but it's doubtful it would cause any damage. Blue dot, a shotgun and pistol powder is known to be inversely temp sensitive. It actually gains pressure during colder temps. If your curious how it may affect your load, Put some rounds in the freezer overnight, take them to the range in an ice chest with ice, and run them through a chronograph. Then put some on the dashboard of the vehicle with the windows up in the sun, and let them warm up. You might see 100 fps difference in velocity. At normal hunting ranges under 400 yds, it's likely you wouldn't notice the difference. If you're shooting benchrest or long range precision shooting, they pay close attention to temperature sensitivity. [/QUOTE]
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