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Rifles, Reloading, Optics, Equipment
Reloading
Need H1000 Loads for New 300 PRC
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<blockquote data-quote="JLB5482" data-source="post: 2195602" data-attributes="member: 118679"><p>So 3.740 would put you .010" off the lands.</p><p></p><p>If you want to shoot in the lands, make a dummy round with no primer or powder at around 3.80" and chamber it, letting the lands seat the bullet where it wants to be, and then rack your bolt back removing your dummy round and measure it again and see what the OAL is. It's really best to use a comparator for this.</p><p></p><p></p><p>This will give you your max soft seat jamb measurement.</p><p></p><p>From there you can only go make it shorter to start your seating depth work.</p><p></p><p></p><p>If you are not comfortable with being in the lands, then start .010" off the lands and work back.</p><p></p><p></p><p>There is also a good article about this here.</p><p></p><p></p><p>Here is a snippet</p><p></p><p></p><p>[ATTACH=full]273790[/ATTACH]</p></blockquote><p></p>
[QUOTE="JLB5482, post: 2195602, member: 118679"] So 3.740 would put you .010" off the lands. If you want to shoot in the lands, make a dummy round with no primer or powder at around 3.80" and chamber it, letting the lands seat the bullet where it wants to be, and then rack your bolt back removing your dummy round and measure it again and see what the OAL is. It's really best to use a comparator for this. This will give you your max soft seat jamb measurement. From there you can only go make it shorter to start your seating depth work. If you are not comfortable with being in the lands, then start .010" off the lands and work back. There is also a good article about this here. Here is a snippet [ATTACH type="full" alt="Screenshot_20210512-063422_Samsung Notes.jpg"]273790[/ATTACH] [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Need H1000 Loads for New 300 PRC
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