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Rifles, Reloading, Optics, Equipment
Reloading
Effects of Temperature on Velocity...
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<blockquote data-quote="Joel Russo" data-source="post: 277356" data-attributes="member: 6152"><p>A few years back I developed a load for my .300 RUM at 65* using Retumbo powder. Clocked it at 3225 fps through my PVM-22 infrared chrono.</p><p></p><p>Took the rifle to Alberta with the same load and drug the chrono along. Hovering around 0*, the first one through the chrono was 3221 fps. Rifle and ammo was outside all night. I figured that was about as temperature stable as you can get.</p><p>I quit worrying about that particular combination.</p></blockquote><p></p>
[QUOTE="Joel Russo, post: 277356, member: 6152"] A few years back I developed a load for my .300 RUM at 65* using Retumbo powder. Clocked it at 3225 fps through my PVM-22 infrared chrono. Took the rifle to Alberta with the same load and drug the chrono along. Hovering around 0*, the first one through the chrono was 3221 fps. Rifle and ammo was outside all night. I figured that was about as temperature stable as you can get. I quit worrying about that particular combination. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Effects of Temperature on Velocity...
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