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Hunting
Long Range Hunting & Shooting
Bullet group size calculator?
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<blockquote data-quote="Accuracyman" data-source="post: 1901299" data-attributes="member: 112298"><p>We use a micrometer with Neil Jones attachments. I have measured benchrest targets for the past 10 years. The attachment has circles etched into the plastic with a magnifier for precise centering over a bullet hole, push a lock that holds one side of the mic, then slide the other side of the mic over to outer bullet in the group and read the micrometer. Normally the circles are 22,6mm, and 30 cal. Your eye can very accurately center a ring over a bullet hole so the measurement is amazingly accurate and consistent.</p><p></p><p>[URL unfurl="true"]http://www.neiljones.com/html/target_measuring.html[/URL]</p></blockquote><p></p>
[QUOTE="Accuracyman, post: 1901299, member: 112298"] We use a micrometer with Neil Jones attachments. I have measured benchrest targets for the past 10 years. The attachment has circles etched into the plastic with a magnifier for precise centering over a bullet hole, push a lock that holds one side of the mic, then slide the other side of the mic over to outer bullet in the group and read the micrometer. Normally the circles are 22,6mm, and 30 cal. Your eye can very accurately center a ring over a bullet hole so the measurement is amazingly accurate and consistent. [URL unfurl="true"]http://www.neiljones.com/html/target_measuring.html[/URL] [/QUOTE]
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Bullet group size calculator?
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