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Rifles, Reloading, Optics, Equipment
Reloading
Cold temp caused faster speeds
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<blockquote data-quote="bstomper" data-source="post: 1775853" data-attributes="member: 37250"><p>I think I figured out where the extra speed came from with my 7 mm. The 2891 FPS was at my initial coal of 3.350". When I did my seating depth testing to tighten up the groups, the best group was at 3.310" so that what I stuck with. I never did check the speed of the new length of 3.310". I'm assuming that with the smaller case volume because of the shorter seated bullet the pressure increases slightly resulting in slightly faster speeds. </p><p>still not sure on the creedmoor though</p></blockquote><p></p>
[QUOTE="bstomper, post: 1775853, member: 37250"] I think I figured out where the extra speed came from with my 7 mm. The 2891 FPS was at my initial coal of 3.350”. When I did my seating depth testing to tighten up the groups, the best group was at 3.310” so that what I stuck with. I never did check the speed of the new length of 3.310”. I’m assuming that with the smaller case volume because of the shorter seated bullet the pressure increases slightly resulting in slightly faster speeds. still not sure on the creedmoor though [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Cold temp caused faster speeds
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