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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
bullet run out on full sized cases
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<blockquote data-quote="Mysticplayer" data-source="post: 116626" data-attributes="member: 8947"><p>DON'T GO THERE /ubbthreads/images/graemlins/grin.gif</p><p></p><p>Was driving me insane but is helpful in diagnosing cranky rifles.</p><p></p><p>I check fired cases and sized cases. In almost all the rifles I own, runout is 0 to 2thou. That is excellent given that my guage has a tolerance of 1 thou error.</p><p></p><p>I use Lee Collet neck sizing dies whenever I can and cases show no change before and after sizing. No doughnuts either.</p><p></p><p>however, after seating the bullets, runout AT THE BULLET can increase. The neck/shoulder runout doesn't change though.</p><p></p><p>Crazy part is that even with runout varying (at the bullet) of one thou to 5 thou, groups are still very small. In fact, the smallest group one rifle ever shot was with the batch of highest bullet runout cases.</p><p></p><p>So I now keep track of case runout, and forget about the bullet runout unless I start to see problems on the paper.</p><p></p><p>Right now I am playing with my new 6.5 Mystic 1000mBR rifle. Runout for the cases are pretty much zip. Loaded rds show very low runout but a few cartridges can bump up to 4thou. Groups so far have been bugholes at 200yds using Lapua 139gr Scenars.</p><p></p><p>I am not going to worry about it anymore...</p><p></p><p></p><p>Jerry</p></blockquote><p></p>
[QUOTE="Mysticplayer, post: 116626, member: 8947"] DON'T GO THERE [img]/ubbthreads/images/graemlins/grin.gif[/img] Was driving me insane but is helpful in diagnosing cranky rifles. I check fired cases and sized cases. In almost all the rifles I own, runout is 0 to 2thou. That is excellent given that my guage has a tolerance of 1 thou error. I use Lee Collet neck sizing dies whenever I can and cases show no change before and after sizing. No doughnuts either. however, after seating the bullets, runout AT THE BULLET can increase. The neck/shoulder runout doesn't change though. Crazy part is that even with runout varying (at the bullet) of one thou to 5 thou, groups are still very small. In fact, the smallest group one rifle ever shot was with the batch of highest bullet runout cases. So I now keep track of case runout, and forget about the bullet runout unless I start to see problems on the paper. Right now I am playing with my new 6.5 Mystic 1000mBR rifle. Runout for the cases are pretty much zip. Loaded rds show very low runout but a few cartridges can bump up to 4thou. Groups so far have been bugholes at 200yds using Lapua 139gr Scenars. I am not going to worry about it anymore... Jerry [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
bullet run out on full sized cases
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