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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Internal ballistics frustration.
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<blockquote data-quote="Michael Eichele" data-source="post: 132736" data-attributes="member: 1007"><p>[ QUOTE ]</p><p> Is it perfectly straight or can you see any expansion bands around the body of the case.</p><p> </p><p></p><p>[/ QUOTE ] </p><p></p><p>From what I can tell. it seems to be straight without any rings.</p><p></p><p> [ QUOTE ]</p><p>Do you have even bolt lug contact and has your receiver been accurized and trued?</p><p> </p><p></p><p>[/ QUOTE ] </p><p></p><p>Yes and yes.</p><p></p><p> [ QUOTE ]</p><p> It does seem odd that you need to set the shoulder back that much to chamber easily with a sized case. </p><p></p><p>[/ QUOTE ] </p><p></p><p>I never had to set it back that much to get them to chamber easily (.005") They expanded .003" from new and I would set them back .003 to get them to new size + .002" hoping that would allow a little more case expansion for less pressure spikes. The new cases fired once will chamber back in perfectly whether resized or not. In all cases, if I resize them, even just setting the shoulder back .001" from the fired size, they chamber perfectly. I think I am dead wrong in setting them back that much. The reasoning was if the new ones extracted so easily, a lillte smaller would extract even better. I see now that this may be a bad idea. Do you think this could contribute to the problem? Is this creating more pressure than normal?</p><p></p><p>I am on my way to the range to see if setting them back less will help.</p><p></p><p>Thanks for all of your guy's valuable input.</p></blockquote><p></p>
[QUOTE="Michael Eichele, post: 132736, member: 1007"] [ QUOTE ] Is it perfectly straight or can you see any expansion bands around the body of the case. [/ QUOTE ] From what I can tell. it seems to be straight without any rings. [ QUOTE ] Do you have even bolt lug contact and has your receiver been accurized and trued? [/ QUOTE ] Yes and yes. [ QUOTE ] It does seem odd that you need to set the shoulder back that much to chamber easily with a sized case. [/ QUOTE ] I never had to set it back that much to get them to chamber easily (.005") They expanded .003" from new and I would set them back .003 to get them to new size + .002" hoping that would allow a little more case expansion for less pressure spikes. The new cases fired once will chamber back in perfectly whether resized or not. In all cases, if I resize them, even just setting the shoulder back .001" from the fired size, they chamber perfectly. I think I am dead wrong in setting them back that much. The reasoning was if the new ones extracted so easily, a lillte smaller would extract even better. I see now that this may be a bad idea. Do you think this could contribute to the problem? Is this creating more pressure than normal? I am on my way to the range to see if setting them back less will help. Thanks for all of your guy's valuable input. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Internal ballistics frustration.
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