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Rifles, Reloading, Optics, Equipment
Reloading
COL and load data
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<blockquote data-quote="One_Duck_Limit" data-source="post: 240275" data-attributes="member: 13320"><p>Thanks everyone.</p><p> </p><p>I'll adjust my seating depth by .007" to just touch the lands.</p><p> </p><p>I've got a chronograph on order, it should be here before I begin testing these loads at the range. Most of what I've ready about chronographs suggests placing them around 15 feet from the muzzle with a magnum caliber. Is there a formula to account for the distance from the muzzle to the chronograph? My buddy loads shot shells and places his chronograph 10 feet from the muzzle the adds 100 fps to the reading to account for the distance.</p><p> </p><p>I measured the distance to the lands using a Hornady COL tool and bullet comparator </p><p> </p><p>I used the dummy round to check magazine clearance. My box has enough clearance to load feed the loads.</p><p> </p><p>So... if the load were .020 off the lands, 3.290 vs 3.441, would the difference in COL cause the pressure to be lower? Assuming the same gun and load components are used.</p></blockquote><p></p>
[QUOTE="One_Duck_Limit, post: 240275, member: 13320"] Thanks everyone. I'll adjust my seating depth by .007" to just touch the lands. I've got a chronograph on order, it should be here before I begin testing these loads at the range. Most of what I've ready about chronographs suggests placing them around 15 feet from the muzzle with a magnum caliber. Is there a formula to account for the distance from the muzzle to the chronograph? My buddy loads shot shells and places his chronograph 10 feet from the muzzle the adds 100 fps to the reading to account for the distance. I measured the distance to the lands using a Hornady COL tool and bullet comparator I used the dummy round to check magazine clearance. My box has enough clearance to load feed the loads. So... if the load were .020 off the lands, 3.290 vs 3.441, would the difference in COL cause the pressure to be lower? Assuming the same gun and load components are used. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
COL and load data
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