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Rifles, Reloading, Optics, Equipment
Reloading
Retumbo - Powder temp V's velocity
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<blockquote data-quote="Greyfox" data-source="post: 584131" data-attributes="member: 10291"><p>I have done some work with my 6.5x284 loaded with 140vld's and 59 gr of Retumbo. My Chrono tests seem to indicate a 15-25 fps velocity difference from 25F to 80F. I am not completely confident of chrono data especially when testing on a 25F day and comparing to data aquired back when it was 80F. But, this appears to correlate well when I plug my baseline data into my ballistic program and do some actual field testing at extended ranges at the actual temperatures. Bottom line is that I get pretty close when I plug temperature changes into my ballistic program. Just my experience.</p></blockquote><p></p>
[QUOTE="Greyfox, post: 584131, member: 10291"] I have done some work with my 6.5x284 loaded with 140vld's and 59 gr of Retumbo. My Chrono tests seem to indicate a 15-25 fps velocity difference from 25F to 80F. I am not completely confident of chrono data especially when testing on a 25F day and comparing to data aquired back when it was 80F. But, this appears to correlate well when I plug my baseline data into my ballistic program and do some actual field testing at extended ranges at the actual temperatures. Bottom line is that I get pretty close when I plug temperature changes into my ballistic program. Just my experience. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Retumbo - Powder temp V's velocity
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