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Rifles, Reloading, Optics, Equipment
Reloading
Dramatic drop in velocity with exact same components - strange! Ever seen this??
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<blockquote data-quote="Doom2" data-source="post: 2294180" data-attributes="member: 108323"><p>I was kidding about the humidity. Barometric pressure has almost no effect on chronograph readings, especially for the MS. For optical chronographs its on the order of 1/2 fps on a 55gr 223 round @15 ft from the muzzle for 1/2" mercury. For heavier bullets its less.</p></blockquote><p></p>
[QUOTE="Doom2, post: 2294180, member: 108323"] I was kidding about the humidity. Barometric pressure has almost no effect on chronograph readings, especially for the MS. For optical chronographs its on the order of 1/2 fps on a 55gr 223 round @15 ft from the muzzle for 1/2” mercury. For heavier bullets its less. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Dramatic drop in velocity with exact same components - strange! Ever seen this??
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