Target circle explained

A target circle is the area in front of a firearm within which that firearm might impact.^[1] The smaller the target circle, the greater the firearm's accuracy.

Notes and References

1. Book: Souter, Gerry . American Shooter: A Personal History of Gun Culture in the United States . 2012-02-01 . Potomac Books, Inc. . 978-1-59797-690-9 . 60 . en.