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Rifles, Reloading, Optics, Equipment
Reloading
what to do with cases with excessive neck run out?
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<blockquote data-quote="cbb" data-source="post: 592796" data-attributes="member: 35707"><p>Thanks eveyone, </p><p>I was sizing nearly all of the neck to start. I tried sizing to 75% of the neck length but I was not able to decrease my run out. I was measuring in the middle of the area actually sized and not on the ends. I did not check to see if unsized portion will cause a chambering issue. I'll have to go check. </p><p></p><p>I was just running the brass up over the expander mandrel without running it up to the bushing. I would remove the expander and then run the brass all the way up to the bushing. Two steps in the same die to get better run out.</p><p></p><p>I understand that firing brass in my chamber will straighten it out cases and get my run out much lower if I only use the bushing and not the expander on fired cases. Around .001 from Shawn's video in which he is loading for guns such as mine and made by him. Die was also bought from him so it should match the gun. I will double check the expander and case measurements once I get some fired brass. Thanks </p><p></p><p>New to the game, I am afraid of wobbling several rounds down my first custom gun just to get correct cases with .005 to .013 run out because I'm not sure how a case in this category will effect accuracy compared my best new cases and/or once fired cases. I'm afraid they won't be accurate enough to tell me much about the gun or my ability to shoot. Any Info hear would be helpful. Also, a recommendation on fire forming using just primer, powder, and something like cotton.</p><p></p><p>I find that the Rem Brass is beat up out of the bag. Dents and some case mouths have flat spots. I was wondering if I ran the brass over a 30 cal expander and then went to the necking up with the 338 die sounds like a good idea. Or, should these cases just be culled?</p><p></p><p>What neck variance would you accept and cull when neck turning? </p><p></p><p>Thanks for help and please correct my thinking should it be off. My goal is to get the best from new brass so that each shot is a reflection of my shooting and not the equipment. I'm sure I need some work.</p><p>I plan on keeping in touch with Shawn. He has been very helpful and answers all of my questions. I asked these questions here on a day his shop was presumed closed - Holiday weekend. I will be asking Shawn these same questions. I am also trying educate myself enough to ask intelligent questions and not being too big of pain to anyone. Casey</p></blockquote><p></p>
[QUOTE="cbb, post: 592796, member: 35707"] Thanks eveyone, I was sizing nearly all of the neck to start. I tried sizing to 75% of the neck length but I was not able to decrease my run out. I was measuring in the middle of the area actually sized and not on the ends. I did not check to see if unsized portion will cause a chambering issue. I'll have to go check. I was just running the brass up over the expander mandrel without running it up to the bushing. I would remove the expander and then run the brass all the way up to the bushing. Two steps in the same die to get better run out. I understand that firing brass in my chamber will straighten it out cases and get my run out much lower if I only use the bushing and not the expander on fired cases. Around .001 from Shawn's video in which he is loading for guns such as mine and made by him. Die was also bought from him so it should match the gun. I will double check the expander and case measurements once I get some fired brass. Thanks New to the game, I am afraid of wobbling several rounds down my first custom gun just to get correct cases with .005 to .013 run out because I'm not sure how a case in this category will effect accuracy compared my best new cases and/or once fired cases. I'm afraid they won't be accurate enough to tell me much about the gun or my ability to shoot. Any Info hear would be helpful. Also, a recommendation on fire forming using just primer, powder, and something like cotton. I find that the Rem Brass is beat up out of the bag. Dents and some case mouths have flat spots. I was wondering if I ran the brass over a 30 cal expander and then went to the necking up with the 338 die sounds like a good idea. Or, should these cases just be culled? What neck variance would you accept and cull when neck turning? Thanks for help and please correct my thinking should it be off. My goal is to get the best from new brass so that each shot is a reflection of my shooting and not the equipment. I'm sure I need some work. I plan on keeping in touch with Shawn. He has been very helpful and answers all of my questions. I asked these questions here on a day his shop was presumed closed - Holiday weekend. I will be asking Shawn these same questions. I am also trying educate myself enough to ask intelligent questions and not being too big of pain to anyone. Casey [/QUOTE]
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what to do with cases with excessive neck run out?
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