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Rifles, Reloading, Optics, Equipment
Reloading
Excessive bullet run out. How to remedy?
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<blockquote data-quote="RDM416" data-source="post: 580719" data-attributes="member: 3745"><p>Everyone has been giving you very good advice. I went through the same process several years ago when I "discovered" how much runout my loads had. The steps I used to correct are as follows. </p><p></p><p>I use a Forster press which floats the case base and die. You can accomplish the same thing by not tightening your die down or using an "o" ring under the die. </p><p></p><p>I removed the expander ball. </p><p></p><p>I turn necks to get them true. </p><p></p><p>You described your seating process which involves rotating the case as you are seating. I do the same and have found it helps quite a bit. You can also try the same when sizing. Some will say this work hardens the case and I have no doubt that it does to some degree. However, with the loads I typically use the problem I see most often is lose primer pockets after 6 or 7 loadings. Never had to discard a case that I could attribute to work hardening. I also anneal my necks after the 1st and 5th loading. I am also full length sizing. No problem with neck sizing, but full length works for me. </p><p></p><p>One obvious thing but I will mention it anyway.... make sure you get a good chamfer on the inside of the case neck. </p><p></p><p>Following those steps I went from 6 or 7 thou of run out to less than 1 to 2 with an occasional 3 in the mix.</p></blockquote><p></p>
[QUOTE="RDM416, post: 580719, member: 3745"] Everyone has been giving you very good advice. I went through the same process several years ago when I "discovered" how much runout my loads had. The steps I used to correct are as follows. I use a Forster press which floats the case base and die. You can accomplish the same thing by not tightening your die down or using an "o" ring under the die. I removed the expander ball. I turn necks to get them true. You described your seating process which involves rotating the case as you are seating. I do the same and have found it helps quite a bit. You can also try the same when sizing. Some will say this work hardens the case and I have no doubt that it does to some degree. However, with the loads I typically use the problem I see most often is lose primer pockets after 6 or 7 loadings. Never had to discard a case that I could attribute to work hardening. I also anneal my necks after the 1st and 5th loading. I am also full length sizing. No problem with neck sizing, but full length works for me. One obvious thing but I will mention it anyway.... make sure you get a good chamfer on the inside of the case neck. Following those steps I went from 6 or 7 thou of run out to less than 1 to 2 with an occasional 3 in the mix. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Excessive bullet run out. How to remedy?
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