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Posted: 2/24/2013 9:29:09 PM EDT
| So, when I say, "I shot a 1" group at 100 yards" or a "1 MOA group", did I shoot everything within a 1" circle, or w/in 1" of a center point, which would be ~ w/in a 2" circle? |
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Your question brings up some strange answers. Usually, someone will paint a 1" or 2" circle on a target and blast away, shooting at least 10 rounds. If they all fall within that circle, you've shot a group of that size.
There are more scientific ways of measuring your groups though, here is a link to one of those sites. There are lots of things that can affect your shooting, though. Ever hear of "Mirage?" |
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Quoted:
So, if the full diameter is measured, that means that a 1 MOA rifle will typically shoot w/in 1/2" of the point of aim? Or, is that a 1/2" MOA rifle? I guess the question boils down to diameter vs. radius. Saying that a rifle shot a group of a particular MOA refers to how close together the bullet impacts were to each other on the target. It doesn't say anything about how close the bullet impacts are to the "bullseye" or the point of aim. |
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Groups are generally measured center to center. The two furthest apart in the group is the "extreme spread".
If you download an analysis program it will calculate mean radius for you which is a valuable tool. |
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