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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Weatherby 30-378 Seating Depth Help, PLEASE
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<blockquote data-quote="winmag" data-source="post: 696034" data-attributes="member: 22166"><p>I don't know what you mean by "custom", but Weatherby cartriges typically need that freebore or pressures SPIKE, which is why Wby rifles, chambered in Wby cartriges, have a ridiculous amount of freebore.</p><p>Now, if you had it built w/o freebore then you had a reason, & can tune your loads accordingly.</p><p></p><p>As far as "finding the lands" goes. Load an empty case with one of your bullets seated looooong. Try & close the bolt Gently. </p><p>*this will far exceed your mag length*</p><p>Likely there will be some resistance. Turn your seating die a little deeper, & re-seat your bullet.</p><p>Repeat the process untill you know your very close to being able to close the bolt.</p><p>Then use a sharpie to color the bullet (or a candle to "smoke" it) & continue the process untill you can completely close the bolt, but the lands just barely leave a mark on the ink, or smoke.</p><p>Ay that point you know where your bullet touches the lands, & can adjust your c.o.a.l. accordingly for your bullet, load, & cartrige.</p><p>I'd personally back off a ways from there. I don't like things blowing up near my face.<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite6" alt=":cool:" title="Cool :cool:" loading="lazy" data-shortname=":cool:" /></p></blockquote><p></p>
[QUOTE="winmag, post: 696034, member: 22166"] I don't know what you mean by "custom", but Weatherby cartriges typically need that freebore or pressures SPIKE, which is why Wby rifles, chambered in Wby cartriges, have a ridiculous amount of freebore. Now, if you had it built w/o freebore then you had a reason, & can tune your loads accordingly. As far as "finding the lands" goes. Load an empty case with one of your bullets seated looooong. Try & close the bolt Gently. *this will far exceed your mag length* Likely there will be some resistance. Turn your seating die a little deeper, & re-seat your bullet. Repeat the process untill you know your very close to being able to close the bolt. Then use a sharpie to color the bullet (or a candle to "smoke" it) & continue the process untill you can completely close the bolt, but the lands just barely leave a mark on the ink, or smoke. Ay that point you know where your bullet touches the lands, & can adjust your c.o.a.l. accordingly for your bullet, load, & cartrige. I'd personally back off a ways from there. I don't like things blowing up near my face.:cool: [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Weatherby 30-378 Seating Depth Help, PLEASE
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