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Hunting
Long Range Hunting & Shooting
280 REM & 7RM
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<blockquote data-quote="cajun" data-source="post: 2750507" data-attributes="member: 9772"><p>If you look at a saami chamber print theres a .010 tolerance in chamber dimensions for headspace. Not to mention throating for different bullets. The way I've always approached reloading is pressure and velocity are closely related. With a max book charge if you have a long throat pressure and velocity will be less. So it may take more powder. The max velocity is the key number. However much powder it takes to reach that is variable.</p></blockquote><p></p>
[QUOTE="cajun, post: 2750507, member: 9772"] If you look at a saami chamber print theres a .010 tolerance in chamber dimensions for headspace. Not to mention throating for different bullets. The way I’ve always approached reloading is pressure and velocity are closely related. With a max book charge if you have a long throat pressure and velocity will be less. So it may take more powder. The max velocity is the key number. However much powder it takes to reach that is variable. [/QUOTE]
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280 REM & 7RM
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