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Rifles, Reloading, Optics, Equipment
Reloading
Unaccetable varianace in COAL with Berger VLDs?
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<blockquote data-quote="MNbogboy" data-source="post: 916713" data-attributes="member: 18849"><p>As Mikecr said your CBTO should not be varying much...The COAL you are measuring is normal for Bergers as of late....but the base to ogive should be fairly consistent in spite of the huge variances in actual bullet length...The distance to the lands will remain very close regardless of the COAL... And yes .015 length difference is not an uncommon within the same bullet lot...My guess is that your "jump" is probably fairly consistent and that your COALS are normal for your "lot" of bullets...Your seating stem is probably OK for your Bergers unless some meplats are actually hitting the tip....Other concerns as mentioned earlier are compressed loading and seating pressures and seating technique that all affect COAL and CBTO..</p><p> </p><p>However Bergers as of late are very different animals when there is a lot change...So if you can afford to buy a 1000 or more at a time you could be better off....I have seen .015 off in CBTO with a lot change and .050 thou in length...I can't afford to be buying 1000 at a time and can't afford to burn out any more barrels working up a new load every time I get a new "lot" of the same bullet...So for that reason my plan is not to buy any more Bergers until they learn to change dies more frequently...There are other bullets out there that remain way more consistent from lot to lot.....</p><p> </p><p>Good Luck,</p><p>Randy</p></blockquote><p></p>
[QUOTE="MNbogboy, post: 916713, member: 18849"] As Mikecr said your CBTO should not be varying much...The COAL you are measuring is normal for Bergers as of late....but the base to ogive should be fairly consistent in spite of the huge variances in actual bullet length...The distance to the lands will remain very close regardless of the COAL... And yes .015 length difference is not an uncommon within the same bullet lot...My guess is that your "jump" is probably fairly consistent and that your COALS are normal for your "lot" of bullets...Your seating stem is probably OK for your Bergers unless some meplats are actually hitting the tip....Other concerns as mentioned earlier are compressed loading and seating pressures and seating technique that all affect COAL and CBTO.. However Bergers as of late are very different animals when there is a lot change...So if you can afford to buy a 1000 or more at a time you could be better off....I have seen .015 off in CBTO with a lot change and .050 thou in length...I can't afford to be buying 1000 at a time and can't afford to burn out any more barrels working up a new load every time I get a new "lot" of the same bullet...So for that reason my plan is not to buy any more Bergers until they learn to change dies more frequently...There are other bullets out there that remain way more consistent from lot to lot..... Good Luck, Randy [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Unaccetable varianace in COAL with Berger VLDs?
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