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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
What causes powder temp sensitivity?
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<blockquote data-quote="rammac" data-source="post: 1854974" data-attributes="member: 27761"><p>It's not just powder temperature sensitivity that has an effect on the point of impact.</p><p></p><p>The temperature sensitivity of the powder is controlled by the chemical composition of the powder and any coatings that may have been applied to control the burn rate and temperature sensitivity. What those chemicals are I don't know and doubt if you could found out what they are since most powders are proprietary. Colder air will also cool the temperature of combustion which results in less muzzle velocity and will affect the trajectory of bullet.</p><p></p><p>Air temperature also affects point of impact. Colder air is more dense which changes the trajectory of the bullet, basically cold air causes a bullet to drop quicker.</p><p></p><p>So colder air will cause the bullet to drop due to slower muzzle velocities and denser air.</p></blockquote><p></p>
[QUOTE="rammac, post: 1854974, member: 27761"] It's not just powder temperature sensitivity that has an effect on the point of impact. The temperature sensitivity of the powder is controlled by the chemical composition of the powder and any coatings that may have been applied to control the burn rate and temperature sensitivity. What those chemicals are I don't know and doubt if you could found out what they are since most powders are proprietary. Colder air will also cool the temperature of combustion which results in less muzzle velocity and will affect the trajectory of bullet. Air temperature also affects point of impact. Colder air is more dense which changes the trajectory of the bullet, basically cold air causes a bullet to drop quicker. So colder air will cause the bullet to drop due to slower muzzle velocities and denser air. [/QUOTE]
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What causes powder temp sensitivity?
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