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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Cold weather load development
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<blockquote data-quote="LouBoyd" data-source="post: 585328" data-attributes="member: 9253"><p>The temperature of the rifle will make a small difference but it's the powder and primer temperature at the time of ignition that matters most. The effects of the atmosphere's temperature are easier to calculate than than measure. You can get zero degrees Centigrade with just an ice chest with a slurry of ice and water with the ammo in ziplock bags and carry it to the range. Shoot within a few seconds of taking the ammo out of the ice water and bag. The test is for proper ignition more than for trajectory. Drop is best checked in actual cold weather with sighter shots. It's also practical to use body heat to keep ammo well above ambient temperature until it's time to shoot. Thats an advantage of detachable magazines.</p></blockquote><p></p>
[QUOTE="LouBoyd, post: 585328, member: 9253"] The temperature of the rifle will make a small difference but it's the powder and primer temperature at the time of ignition that matters most. The effects of the atmosphere's temperature are easier to calculate than than measure. You can get zero degrees Centigrade with just an ice chest with a slurry of ice and water with the ammo in ziplock bags and carry it to the range. Shoot within a few seconds of taking the ammo out of the ice water and bag. The test is for proper ignition more than for trajectory. Drop is best checked in actual cold weather with sighter shots. It's also practical to use body heat to keep ammo well above ambient temperature until it's time to shoot. Thats an advantage of detachable magazines. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Cold weather load development
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