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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
OK.. Now what..!?!
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<blockquote data-quote="Darryl Cassel" data-source="post: 27267" data-attributes="member: 34"><p>Jake</p><p></p><p>Clean up the necks on the cases first.</p><p></p><p>What thickness are you turning the necks to?</p><p></p><p>It looks like your really jambing those bullets way up in the lands to far and the cases are extremely dirty. Seat them deeper into the case after measuring the Over all length needed.</p><p></p><p>You must have very tight neck tension on those bullets for them to hold like that when you cam the bolt handle down.</p><p></p><p>I'm not sure if it's a burr, but try the JB like S1 suggested. </p><p></p><p>Check your die and make sure it is clean especially in the neck and shoulder area.</p><p></p><p>Get hold of Chris Jamison. He had some excellent groups with that rifle and 240 grain bullets. Get the overall length he was using. </p><p></p><p>I did get hold of a batch of Sierra 338 300 gr bullets that did mic .3385 and almost reuned a hunting trip until I figured out what had happened. </p><p></p><p>Good thing I take quite a few rounds with me and had some loaded with another lot of bullets that were .3381" to .3382"</p><p></p><p></p><p>Those .3385" would NOT go in the rifle without extreme force. You can imagine what would have happened to the pressure.</p><p></p><p>The bullets I sent you to try were just picked out of the box of 500. I did not mic them so maybe you want to do that. They may be oversize?</p><p></p><p>Email Chris Jamison.</p><p></p><p>DC <img src="http://images/icons/wink.gif" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>[ 05-31-2003: Message edited by: Darryl Cassel ]</p></blockquote><p></p>
[QUOTE="Darryl Cassel, post: 27267, member: 34"] Jake Clean up the necks on the cases first. What thickness are you turning the necks to? It looks like your really jambing those bullets way up in the lands to far and the cases are extremely dirty. Seat them deeper into the case after measuring the Over all length needed. You must have very tight neck tension on those bullets for them to hold like that when you cam the bolt handle down. I'm not sure if it's a burr, but try the JB like S1 suggested. Check your die and make sure it is clean especially in the neck and shoulder area. Get hold of Chris Jamison. He had some excellent groups with that rifle and 240 grain bullets. Get the overall length he was using. I did get hold of a batch of Sierra 338 300 gr bullets that did mic .3385 and almost reuned a hunting trip until I figured out what had happened. Good thing I take quite a few rounds with me and had some loaded with another lot of bullets that were .3381" to .3382" Those .3385" would NOT go in the rifle without extreme force. You can imagine what would have happened to the pressure. The bullets I sent you to try were just picked out of the box of 500. I did not mic them so maybe you want to do that. They may be oversize? Email Chris Jamison. DC [img]images/icons/wink.gif[/img] [ 05-31-2003: Message edited by: Darryl Cassel ] [/QUOTE]
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