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Rifles, Reloading, Optics, Equipment
Reloading
What is going on? COAL coming up short
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<blockquote data-quote="FearNoWind" data-source="post: 987414" data-attributes="member: 50867"><p>Scenar bullets can be a bit problematic. Take a sample of ten new bullets out of the box and compare their base to ogive measurement. Then measure them base to tip. You'll find that the difference in their measurements is the ogive to tip distance which tends to vary, even with the same lot, and the taper (ogive radius) from tip to ogive can also vary so that the seating die contacts some bullets at a different point on the radius than others. That's why I recommend using CBTO rather than COAL when measuring lengths of loaded rounds for consistency.</p><p>The Hornady Bullet Comparator and a good dial caliper works well for that purpose.</p><p></p><p><a href="http://www.brownells.com/reloading/measuring-tools/bullet-comparator-inserts/hornady-lnl-comparator-set-22-6mm-25-270-7mm-30-cal-prod35659.aspx" target="_blank">http://www.brownells.com/reloading/measuring-tools/bullet-comparator-inserts/hornady-lnl-comparator-set-22-6mm-25-270-7mm-30-cal-prod35659.aspx</a></p></blockquote><p></p>
[QUOTE="FearNoWind, post: 987414, member: 50867"] Scenar bullets can be a bit problematic. Take a sample of ten new bullets out of the box and compare their base to ogive measurement. Then measure them base to tip. You'll find that the difference in their measurements is the ogive to tip distance which tends to vary, even with the same lot, and the taper (ogive radius) from tip to ogive can also vary so that the seating die contacts some bullets at a different point on the radius than others. That's why I recommend using CBTO rather than COAL when measuring lengths of loaded rounds for consistency. The Hornady Bullet Comparator and a good dial caliper works well for that purpose. [url]http://www.brownells.com/reloading/measuring-tools/bullet-comparator-inserts/hornady-lnl-comparator-set-22-6mm-25-270-7mm-30-cal-prod35659.aspx[/url] [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
What is going on? COAL coming up short
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