What does it mean when I see references of target group sizes shown as .2s, .3s etc.?
Why not keep it simple and use center to center measurement in inch readings?
They are referring to center to center measurements. A gun that shoots in the 2's is a gun that consistently shoots .2-.299" center to center. From what I've gathered, it's terminology more commonly used with the bench rest crowd.
It's in reference to MOA. so .2 or .3 MOA, 1 moa is 1.047" @ 100 yards, So a .2 groups is just under 1/4 " center to center at 100 yds.
jeff
Jeff,
Are you sure it's in MOA? It seems like most posts (on other sites) that refer to a gun that shoots in the 1's, 2's, or 3's are talking about center to center measurements in inches because group sizes in the their matches are measured in inches. I however, could be mistaken.
The bench shooters measure and communicate in inches. If you use inches, you need to state the range it was measured to be meaningful. If you use MOA, while it doesn't necessarily mean the precision will hold at all ranges, stating the range is not as relevant. If someone speaks about their groups I prefer to know the number of shots, range, and know whether they are talking about MOA or inches.
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The bench shooters measure and communicate in inches. If you use inches, you need to state the range it was measured to be meaningful. If you use MOA, while it doesn't necessarily mean the precision will hold at all ranges, stating the range is not as relevant. If someone speaks about their groups I prefer to know the number of shots, range, and know whether they are talking about MOA or inches.
+1!
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