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Rifles, Reloading, Optics, Equipment
Reloading
Superformance Temp Sensitivity
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<blockquote data-quote="BallisticsGuy" data-source="post: 2222498" data-attributes="member: 96226"><p>Why don't you test it. Drop some rounds in a baggie in a cooler full of blue ice packs, take to range, shoot over chronograph and don't fart around trying to hit the target while you're at it. Pull the round from the cooler, shoot it quickly, rinse and repeat for at least 5 shots. I do testing for my students as a matter of routine and depending on the powder, case capacity and other factors we'll see anywhere from .2fps per degF to 2fps per deg but there's often a sort of stable area, usually in the 40-80f range where things are pretty stable. If you do a hot test too (leave some ammo on the dash when it's warm out or use ThermaCare or similar hot pads to warm some up to 110-130F) then you can draw something of a slope and adjust your inputs on your ballistics calculator when appropriate.</p></blockquote><p></p>
[QUOTE="BallisticsGuy, post: 2222498, member: 96226"] Why don't you test it. Drop some rounds in a baggie in a cooler full of blue ice packs, take to range, shoot over chronograph and don't fart around trying to hit the target while you're at it. Pull the round from the cooler, shoot it quickly, rinse and repeat for at least 5 shots. I do testing for my students as a matter of routine and depending on the powder, case capacity and other factors we'll see anywhere from .2fps per degF to 2fps per deg but there's often a sort of stable area, usually in the 40-80f range where things are pretty stable. If you do a hot test too (leave some ammo on the dash when it's warm out or use ThermaCare or similar hot pads to warm some up to 110-130F) then you can draw something of a slope and adjust your inputs on your ballistics calculator when appropriate. [/QUOTE]
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Superformance Temp Sensitivity
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