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Rifles, Reloading, Optics, Equipment
Reloading
Flattened Primers? Help?
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<blockquote data-quote="Bart B" data-source="post: 566901" data-attributes="member: 5302"><p>Sounds about right.</p><p></p><p>The one exception would be barrel length. Lots of barrels will add about 80 to 100 fps if they're 4 inches longer but have the same peak pressure. Example, going from 22 to 26 inches in a .308 Win. With a 30 caliber magnum, the same length increase might get near 150 fps more velocity. Keep this in mind if your pressure reference barrels' length is different than yours. I've seen about 190 fps difference between 22 and 32 inch barrels with near identical bore and groove diameters with the same .308 Win. load.</p></blockquote><p></p>
[QUOTE="Bart B, post: 566901, member: 5302"] Sounds about right. The one exception would be barrel length. Lots of barrels will add about 80 to 100 fps if they're 4 inches longer but have the same peak pressure. Example, going from 22 to 26 inches in a .308 Win. With a 30 caliber magnum, the same length increase might get near 150 fps more velocity. Keep this in mind if your pressure reference barrels' length is different than yours. I've seen about 190 fps difference between 22 and 32 inch barrels with near identical bore and groove diameters with the same .308 Win. load. [/QUOTE]
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Flattened Primers? Help?
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