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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Temp sensitive powder and fps ?
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<blockquote data-quote="BrentM" data-source="post: 889990" data-attributes="member: 61747"><p>I believe I had the correct atmosphere conditions input and in order to be that far off it would have to be below sea level and -30 with powder temp turned on. According to the ballistics computer.</p><p> </p><p>I will take the chrono out this weekend test some loads to see what number needs to be in the powder temp section. Based on Hogdon site it should be .36fps/degree. I will try and verify that. Temps here are 0-10F. I can stick some rounds next to my body and some outside and test the spread.</p><p> </p><p>I think it is a combo of the temp sensitivity and lower BC. Berger and Nosler both have much lower BC numbers and both of those bullets are generally accepted to be of very good quality. In theory if I use .36 and a BC of .235 with 3800 FPS the elevation solution is very close. If my scope has some error I will try and rule that out as well. </p><p> </p><p>Appreciate all the input and things to consider.</p></blockquote><p></p>
[QUOTE="BrentM, post: 889990, member: 61747"] I believe I had the correct atmosphere conditions input and in order to be that far off it would have to be below sea level and -30 with powder temp turned on. According to the ballistics computer. I will take the chrono out this weekend test some loads to see what number needs to be in the powder temp section. Based on Hogdon site it should be .36fps/degree. I will try and verify that. Temps here are 0-10F. I can stick some rounds next to my body and some outside and test the spread. I think it is a combo of the temp sensitivity and lower BC. Berger and Nosler both have much lower BC numbers and both of those bullets are generally accepted to be of very good quality. In theory if I use .36 and a BC of .235 with 3800 FPS the elevation solution is very close. If my scope has some error I will try and rule that out as well. Appreciate all the input and things to consider. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Temp sensitive powder and fps ?
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