Accuracy Defined: What Does 10% Mean?

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SUMMARY

The discussion centers on the interpretation of a gun's 10% accuracy rating and its implications for bullet spread. Participants express skepticism about the meaningfulness of this metric, suggesting that it fails to convey essential information regarding the distribution of missed shots. The conversation highlights the importance of understanding accuracy in terms of Minute of Angle (MOA) and the need for empirical data to establish a relationship between accuracy and bullet dispersion. Additionally, the complexities of calculating accuracy when multiple bullets are fired simultaneously are briefly explored.

PREREQUISITES
  • Understanding of firearm accuracy metrics, specifically Minute of Angle (MOA).
  • Basic knowledge of probability distributions and their applications.
  • Familiarity with empirical data collection methods in ballistics.
  • Concepts of shot grouping and dispersion analysis.
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  • Research "Minute of Angle (MOA) in firearms" for a deeper understanding of accuracy measurements.
  • Explore "probability distributions in ballistics" to understand shot spread predictions.
  • Investigate "empirical data collection methods in shooting accuracy" for practical applications.
  • Learn about "shot grouping analysis techniques" to evaluate firearm performance.
USEFUL FOR

This discussion is beneficial for firearms enthusiasts, ballistics analysts, and anyone involved in shooting sports or firearm sales, particularly those seeking to understand accuracy metrics and their implications.

sunmaggot
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I want to ask a strange question. When the gun has 10% accuracy, what does 10% mean? I mean it doesn't really tell me anything. How large is the area the bullets spread if the gun has 10% accuracy? I have already attempted to find articles in google, and I still didn't get the answer about the relationship between spreading area and accuracy value.
 
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I suspect it is "meaningless number used by salespersons". In my opinion 10% accuracy would mean that with the gun in a vise (or whatever gunsmiths use), 10% of the shots would hit the bulls-eye. Which is pretty bad if you ask me.
 
Svein said:
I suspect it is "meaningless number used by salespersons". In my opinion 10% accuracy would mean that with the gun in a vise (or whatever gunsmiths use), 10% of the shots would hit the bulls-eye. Which is pretty bad if you ask me.
but my concern is about the remaining 90% shots, where will they land? any probability equations that can predict? thx
 
sunmaggot said:
but my concern is about the remaining 90% shots, where will they land? any probability equations that can predict? thx
Well, i assume they will hit something in front of the gun. You can assign any probability distribution you want, but it will be meaningless until you have data.
 
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sunmaggot said:
I want to ask a strange question. When the gun has 10% accuracy, what does 10% mean? I mean it doesn't really tell me anything. How large is the area the bullets spread if the gun has 10% accuracy? I have already attempted to find articles in google, and I still didn't get the answer about the relationship between spreading area and accuracy value.

The usual measurement of gun accuracy is MOA.
http://en.wikipedia.org/wiki/Minute_of_arc#Firearms
 
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Svein said:
Well, i assume they will hit something in front of the gun. You can any probability distribution you want, but it will be meaningless until you have data.
oh I see, what I was thinking about is way more complicated though. Say a gun can shoot 2 bullets at the same time, with what accuracy of the gun will it hit a target with area A in the most accurate manner. each bullet will go into the direction according to the probability. Any idea for this...? thx
 

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