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Long Range Hunting & Shooting
best method for measuring a 3 shot group
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<blockquote data-quote="Browninglover1" data-source="post: 531152" data-attributes="member: 29966"><p>What you are doing by measuring properly is finding out how far away the bullets landed from each other center to center. This means if a perfect world you could shoot a 0" group with whatever caliber you wanted as long as all the bullets went in the same hole. A .26" group means that your bullets landed just barely over 1/4" inch apart center to center. Imagine if you shot a one hole group.... you would measure outside to outside and read .308, after you subtract bullet diameter you would end up with a .000 inch group. This means that every shot landed exactly the same place as the other.</p><p></p><p>In my experience people tend to think bigger rifles shoot tighter groups than they really do because the edges (inside edges in this example) of the bullet holes appear closer together. I had a guy at the range shooting his 308 that told me his gun was shooting lots better than my 22-250 because the holes looked closer together. However, after we measured his group he was shooting around .800" at 100 yards and my 22-250 was shooting around .650" and was clearly the winner.</p><p></p><p>That's why we measure center to center. Because it doesn't matter what caliber bullets you are shooting, it gives an accurate description of how far away your shots landed from each other.</p></blockquote><p></p>
[QUOTE="Browninglover1, post: 531152, member: 29966"] What you are doing by measuring properly is finding out how far away the bullets landed from each other center to center. This means if a perfect world you could shoot a 0" group with whatever caliber you wanted as long as all the bullets went in the same hole. A .26" group means that your bullets landed just barely over 1/4" inch apart center to center. Imagine if you shot a one hole group.... you would measure outside to outside and read .308, after you subtract bullet diameter you would end up with a .000 inch group. This means that every shot landed exactly the same place as the other. In my experience people tend to think bigger rifles shoot tighter groups than they really do because the edges (inside edges in this example) of the bullet holes appear closer together. I had a guy at the range shooting his 308 that told me his gun was shooting lots better than my 22-250 because the holes looked closer together. However, after we measured his group he was shooting around .800" at 100 yards and my 22-250 was shooting around .650" and was clearly the winner. That's why we measure center to center. Because it doesn't matter what caliber bullets you are shooting, it gives an accurate description of how far away your shots landed from each other. [/QUOTE]
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best method for measuring a 3 shot group
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