First Look: AmmoMan Shot Group Analyzer

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posted on October 22, 2020
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Most shooters gauge their accuracy by measuring the extreme spread of their shot group, which measures the two worst shots in each group. While convenient, measuring groups this way requires more ammunition to create a statistically significant sample size than other methods, such as using the mean radius between each shot.

Measuring groups with mean radius has been in common use in the U.S. Armed Forces for years now to assess marksmanship and ammunition performance. Mean radius reflects the average distance of all shots from the center of a group, which can be a tedious task.

Traditionally, a shooter calculating mean radius would have to measure the vertical distances of all shots above an arbitrarily chosen horizontal line, average those measurements, measure the horizontal distances of all shots to the side of an arbitrarily chosen vertical line, average those measurements, use those measurements to determine the group center, measure the distances of all shots from the group center, and finally average those measurements.

Now you can reduce all effort and math with the AmmoMan Shot Group Analyzer, a cross-platform, easy to use accuracy aid available for free on the AmmoMan website.

“We designed our Shot Group Analyzer so new and experienced shooters alike can track their progress and get more value from their time at the range,” said Kevin Creighton, the Executive Editor of the School of Guns at AmmoMan.com. “All you have to do is upload a photo of your target, click or tap your aiming point, set the scale of your target, and then click or tap each of your shots. The Shot Group Analyzer will instantly calculate your spread, group, and offset data as well as track the number of shots you fired.”

“Up until now, calculating the mean radius of your shot groups was time-consuming and difficult. The Shot Group Analyzer makes this extremely useful measurement of accuracy available to anyone with a smartphone, tablet or computer. It’s our hope that it will help make better shooters.”

Thanks to AmmoMan’s Shot Group Analyzer, now anyone can determine their shot group’s mean radius without measurement or arithmetic. The Shot Group Analyzer is available online at AmmoMan.com

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