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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
250 GR .338 Berger Elite Hunter
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<blockquote data-quote="Broz" data-source="post: 782894" data-attributes="member: 7503"><p>It sounds like you are measureing just with calipers and not using a bullet comparator. If this is true you need to know you can not measure any bullet this way for an accurate seating depth. The difference you are getting is in the hollow point tip, it has little to do with anything. It will be rotationg at over 200,000 rpm. Accuracy will be supurb if you get your reloading methods to a consistant level. Did you weigh any of the Elites? Maybe try that and also weigh some of the Accubonds.</p><p> </p><p>What you need to know is where the o-give of the bullet sits in relation to the rifling in your barrel. The "off the lands" measurement we all talk about. Just measuring case head to tip is a very inconsistent way to measure bullets and only tells you if it will fit in the mag box. Doing it the way you did will almost certainly assure they will all be different seating depths off the lands. And if you thought that you were setting up the Bergers to be the same seating depth as your Accubond load you were mistaken. The difference in the bullets physical shape, length and bearing surface will assure they will be seated to different depths if you don't measure with a comparator.</p><p> </p><p>So, get a bullet comparator, or just set the die somewhere and seat them all. Providing the die is not bottoming out on the tip of the bullet it will contact below the point and seat them all at the same depth. Problem is you have no way of knowing what that depth or "off the lands" measurement is.</p><p> </p><p>Again, pay no attention to that .005" or .010" tip variation. The bullets will shoot extremely accurate as the rest of the bullet, and how far off the lands, is what matters.</p><p> </p><p>Hope this helps.</p><p> </p><p>Jeff</p></blockquote><p></p>
[QUOTE="Broz, post: 782894, member: 7503"] It sounds like you are measureing just with calipers and not using a bullet comparator. If this is true you need to know you can not measure any bullet this way for an accurate seating depth. The difference you are getting is in the hollow point tip, it has little to do with anything. It will be rotationg at over 200,000 rpm. Accuracy will be supurb if you get your reloading methods to a consistant level. Did you weigh any of the Elites? Maybe try that and also weigh some of the Accubonds. What you need to know is where the o-give of the bullet sits in relation to the rifling in your barrel. The "off the lands" measurement we all talk about. Just measuring case head to tip is a very inconsistent way to measure bullets and only tells you if it will fit in the mag box. Doing it the way you did will almost certainly assure they will all be different seating depths off the lands. And if you thought that you were setting up the Bergers to be the same seating depth as your Accubond load you were mistaken. The difference in the bullets physical shape, length and bearing surface will assure they will be seated to different depths if you don't measure with a comparator. So, get a bullet comparator, or just set the die somewhere and seat them all. Providing the die is not bottoming out on the tip of the bullet it will contact below the point and seat them all at the same depth. Problem is you have no way of knowing what that depth or "off the lands" measurement is. Again, pay no attention to that .005" or .010" tip variation. The bullets will shoot extremely accurate as the rest of the bullet, and how far off the lands, is what matters. Hope this helps. Jeff [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
250 GR .338 Berger Elite Hunter
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